Quick view Details Bluelab | sku: 716445 Bluelab Replacement pH Probe MSRP: Now: $114.98 Add to Cart Compare Quick view Details General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) MSRP: Now: $17.38 Add to Cart Compare Quick view Details sku: HI5036-050 Hanna Groline Quick Cal 500ml MSRP: Now: $48.00 Add to Cart Compare Quick view Details Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM MSRP: Now: $450.36 Add to Cart Compare Quick view Details General Hydroponics GH pH 7.01 Calibration Solution MSRP: Now: $7.87 Out of stock Compare Quick view Details Bluelab | sku: HGC716482 Bluelab PPM pen MSRP: Now: $118.80 Add to Cart Compare Quick view Details Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS MSRP: Now: $178.80 Add to Cart Compare Quick view Details General Hydroponics GH pH 4.01 Calibration Solution MSRP: Now: $7.76 Choose Options Compare Quick view Details Bluelab | sku: HGC716336 Bluelab Guardian Monitor MSRP: Now: $506.13 Out of stock Compare Quick view Details sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 MSRP: Now: $649.90 Add to Cart Compare Quick view Details TrolMaster | sku: AMP-2 Aqua-X Sensor Board MSRP: Now: $147.00 Out of stock Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Details General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) MSRP: Now: $17.38 Add to Cart Compare Quick view Details sku: HI5036-050 Hanna Groline Quick Cal 500ml MSRP: Now: $48.00 Add to Cart Compare Quick view Details Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM MSRP: Now: $450.36 Add to Cart Compare Quick view Details General Hydroponics GH pH 7.01 Calibration Solution MSRP: Now: $7.87 Out of stock Compare Quick view Details Bluelab | sku: HGC716482 Bluelab PPM pen MSRP: Now: $118.80 Add to Cart Compare Quick view Details Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS MSRP: Now: $178.80 Add to Cart Compare Quick view Details General Hydroponics GH pH 4.01 Calibration Solution MSRP: Now: $7.76 Choose Options Compare Quick view Details Bluelab | sku: HGC716336 Bluelab Guardian Monitor MSRP: Now: $506.13 Out of stock Compare Quick view Details sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 MSRP: Now: $649.90 Add to Cart Compare Quick view Details TrolMaster | sku: AMP-2 Aqua-X Sensor Board MSRP: Now: $147.00 Out of stock Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Details sku: HI5036-050 Hanna Groline Quick Cal 500ml MSRP: Now: $48.00 Add to Cart Compare Quick view Details Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM MSRP: Now: $450.36 Add to Cart Compare Quick view Details General Hydroponics GH pH 7.01 Calibration Solution MSRP: Now: $7.87 Out of stock Compare Quick view Details Bluelab | sku: HGC716482 Bluelab PPM pen MSRP: Now: $118.80 Add to Cart Compare Quick view Details Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS MSRP: Now: $178.80 Add to Cart Compare Quick view Details General Hydroponics GH pH 4.01 Calibration Solution MSRP: Now: $7.76 Choose Options Compare Quick view Details Bluelab | sku: HGC716336 Bluelab Guardian Monitor MSRP: Now: $506.13 Out of stock Compare Quick view Details sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 MSRP: Now: $649.90 Add to Cart Compare Quick view Details TrolMaster | sku: AMP-2 Aqua-X Sensor Board MSRP: Now: $147.00 Out of stock Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Details Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM MSRP: Now: $450.36 Add to Cart Compare Quick view Details General Hydroponics GH pH 7.01 Calibration Solution MSRP: Now: $7.87 Out of stock Compare Quick view Details Bluelab | sku: HGC716482 Bluelab PPM pen MSRP: Now: $118.80 Add to Cart Compare Quick view Details Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS MSRP: Now: $178.80 Add to Cart Compare Quick view Details General Hydroponics GH pH 4.01 Calibration Solution MSRP: Now: $7.76 Choose Options Compare Quick view Details Bluelab | sku: HGC716336 Bluelab Guardian Monitor MSRP: Now: $506.13 Out of stock Compare Quick view Details sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 MSRP: Now: $649.90 Add to Cart Compare Quick view Details TrolMaster | sku: AMP-2 Aqua-X Sensor Board MSRP: Now: $147.00 Out of stock Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Details General Hydroponics GH pH 7.01 Calibration Solution MSRP: Now: $7.87 Out of stock Compare Quick view Details Bluelab | sku: HGC716482 Bluelab PPM pen MSRP: Now: $118.80 Add to Cart Compare Quick view Details Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS MSRP: Now: $178.80 Add to Cart Compare Quick view Details General Hydroponics GH pH 4.01 Calibration Solution MSRP: Now: $7.76 Choose Options Compare Quick view Details Bluelab | sku: HGC716336 Bluelab Guardian Monitor MSRP: Now: $506.13 Out of stock Compare Quick view Details sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 MSRP: Now: $649.90 Add to Cart Compare Quick view Details TrolMaster | sku: AMP-2 Aqua-X Sensor Board MSRP: Now: $147.00 Out of stock Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Details Bluelab | sku: HGC716482 Bluelab PPM pen MSRP: Now: $118.80 Add to Cart Compare Quick view Details Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS MSRP: Now: $178.80 Add to Cart Compare Quick view Details General Hydroponics GH pH 4.01 Calibration Solution MSRP: Now: $7.76 Choose Options Compare Quick view Details Bluelab | sku: HGC716336 Bluelab Guardian Monitor MSRP: Now: $506.13 Out of stock Compare Quick view Details sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 MSRP: Now: $649.90 Add to Cart Compare Quick view Details TrolMaster | sku: AMP-2 Aqua-X Sensor Board MSRP: Now: $147.00 Out of stock Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Details Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS MSRP: Now: $178.80 Add to Cart Compare Quick view Details General Hydroponics GH pH 4.01 Calibration Solution MSRP: Now: $7.76 Choose Options Compare Quick view Details Bluelab | sku: HGC716336 Bluelab Guardian Monitor MSRP: Now: $506.13 Out of stock Compare Quick view Details sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 MSRP: Now: $649.90 Add to Cart Compare Quick view Details TrolMaster | sku: AMP-2 Aqua-X Sensor Board MSRP: Now: $147.00 Out of stock Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Details General Hydroponics GH pH 4.01 Calibration Solution MSRP: Now: $7.76 Choose Options Compare Quick view Details Bluelab | sku: HGC716336 Bluelab Guardian Monitor MSRP: Now: $506.13 Out of stock Compare Quick view Details sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 MSRP: Now: $649.90 Add to Cart Compare Quick view Details TrolMaster | sku: AMP-2 Aqua-X Sensor Board MSRP: Now: $147.00 Out of stock Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Details Bluelab | sku: HGC716336 Bluelab Guardian Monitor MSRP: Now: $506.13 Out of stock Compare Quick view Details sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 MSRP: Now: $649.90 Add to Cart Compare Quick view Details TrolMaster | sku: AMP-2 Aqua-X Sensor Board MSRP: Now: $147.00 Out of stock Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Details sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 MSRP: Now: $649.90 Add to Cart Compare Quick view Details TrolMaster | sku: AMP-2 Aqua-X Sensor Board MSRP: Now: $147.00 Out of stock Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Details TrolMaster | sku: AMP-2 Aqua-X Sensor Board MSRP: Now: $147.00 Out of stock Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Bluelab | sku: 716445 Bluelab Replacement pH Probe Bluelab® Combo Replacement Probe pH MSRP: Now: $114.98 Add to Cart Compare Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view General Hydroponics | sku: 722080 GH pH Control Kit (12/Cs) General Hydroponics® pH Control Kit General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial MSRP: Now: $17.38 Add to Cart Compare Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view sku: HI5036-050 Hanna Groline Quick Cal 500ml QuickCal combo solution is: pH 6.86 EC 5.00 mS/cm QuickCal is used by GroLine meters to calibrate pH & EC/PPM at the same time. This makes calibration easier, with less room for error. Using QuickCal means that customers can... MSRP: Now: $48.00 Add to Cart Compare Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Bluelab | sku: HGC716441 Bluelab Combo Meter pH/PPM Bluelab® Combo Meter The Bluelab Combo Meter is a conductivity, pH and temperature meter all-in-one. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your... MSRP: Now: $450.36 Add to Cart Compare Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view General Hydroponics GH pH 7.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.87 Out of stock Compare Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Bluelab | sku: HGC716482 Bluelab PPM pen Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is... MSRP: Now: $118.80 Add to Cart Compare Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Bluelab | sku: HGC716050 Bluelab Original Truncheon PPM EC TDS Bluelab Original Truncheon® Nutrient Meter With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon® Nutrient Meter has proven... MSRP: Now: $178.80 Add to Cart Compare Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view General Hydroponics GH pH 4.01 Calibration Solution General Hydroponics® Meter Calibration Solutions General Hydroponics™ uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General... MSRP: Now: $7.76 Choose Options Compare Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view Bluelab | sku: HGC716336 Bluelab Guardian Monitor Bluelab® Guardian Monitor Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and... MSRP: Now: $506.13 Out of stock Compare Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view sku: HI9814 Hanna Groline Combo pH PPM Temp meter HI9814 HI9814 GroLine Waterproof Combo meter uses 1 combo probe to measure pH/EC/PPM/Temp. This combo meter is easily calibrated by using just 1 combo pH/EC/PPM calibration solution. Combo pH, EC, and TDS (ppm) probe design... MSRP: Now: $649.90 Add to Cart Compare Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected × OK
Quick view TrolMaster | sku: AMP-2 Aqua-X Sensor Board Overview: AMP-2 Sensor Board is specially designed for Aqua-X Irrigation Control System. With a male-to-male signal cable, this unit acts as a bridge between the sensors (pH Sensor & EC/Temp Sensor) and the Aqua-X Controller. The pH level, EC level... MSRP: Now: $147.00 Out of stock Compare Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected
Quick view TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor Overview: PPH-1 Reservoir pH Sensor is specially designed for Aqua-X Irrigation Control System. The pH electrode probe has a single cylinder that allows direct connection to the terminal of the AMP-2 Sensor Board. It is accurate and reliable that can... MSRP: Now: $112.00 Add to Cart Compare Previous 1 2 3 4 5 Next Previous 1 2 3 4 5 Next Compare Selected
