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 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 General Hydroponics GH pH 4.01 Calibration Solution MSRP: Now: $7.76 Choose Options Compare Quick view Details sku: LL01825 Luster Leaf Digital Soil Moisture Meter MSRP: Now: $23.02 Out of stock Compare Quick view Details sku: HI70300-050 Hanna Groline PH Storage Solution 500ml MSRP: Now: $36.00 Add to Cart Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Details General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view Details sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen MSRP: Now: $38.48 Add to Cart Compare Quick view Details sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml MSRP: Now: $39.69 Add to Cart Compare Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 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 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 General Hydroponics GH pH 4.01 Calibration Solution MSRP: Now: $7.76 Choose Options Compare Quick view Details sku: LL01825 Luster Leaf Digital Soil Moisture Meter MSRP: Now: $23.02 Out of stock Compare Quick view Details sku: HI70300-050 Hanna Groline PH Storage Solution 500ml MSRP: Now: $36.00 Add to Cart Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Details General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view Details sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen MSRP: Now: $38.48 Add to Cart Compare Quick view Details sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml MSRP: Now: $39.69 Add to Cart Compare Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 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 General Hydroponics GH pH 4.01 Calibration Solution MSRP: Now: $7.76 Choose Options Compare Quick view Details sku: LL01825 Luster Leaf Digital Soil Moisture Meter MSRP: Now: $23.02 Out of stock Compare Quick view Details sku: HI70300-050 Hanna Groline PH Storage Solution 500ml MSRP: Now: $36.00 Add to Cart Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Details General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view Details sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen MSRP: Now: $38.48 Add to Cart Compare Quick view Details sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml MSRP: Now: $39.69 Add to Cart Compare Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details Bluelab | sku: HGC716482 Bluelab PPM pen MSRP: Now: $118.80 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter MSRP: Now: $23.02 Out of stock Compare Quick view Details sku: HI70300-050 Hanna Groline PH Storage Solution 500ml MSRP: Now: $36.00 Add to Cart Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Details General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view Details sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen MSRP: Now: $38.48 Add to Cart Compare Quick view Details sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml MSRP: Now: $39.69 Add to Cart Compare Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter MSRP: Now: $23.02 Out of stock Compare Quick view Details sku: HI70300-050 Hanna Groline PH Storage Solution 500ml MSRP: Now: $36.00 Add to Cart Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Details General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view Details sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen MSRP: Now: $38.48 Add to Cart Compare Quick view Details sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml MSRP: Now: $39.69 Add to Cart Compare Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details sku: LL01825 Luster Leaf Digital Soil Moisture Meter MSRP: Now: $23.02 Out of stock Compare Quick view Details sku: HI70300-050 Hanna Groline PH Storage Solution 500ml MSRP: Now: $36.00 Add to Cart Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Details General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view Details sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen MSRP: Now: $38.48 Add to Cart Compare Quick view Details sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml MSRP: Now: $39.69 Add to Cart Compare Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details sku: HI70300-050 Hanna Groline PH Storage Solution 500ml MSRP: Now: $36.00 Add to Cart Compare Quick view Details TrolMaster | sku: PPH-1 Aqua-X Reservoir pH Sensor MSRP: Now: $112.00 Add to Cart Compare Quick view Details General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view Details sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen MSRP: Now: $38.48 Add to Cart Compare Quick view Details sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml MSRP: Now: $39.69 Add to Cart Compare Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 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 Details General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view Details sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen MSRP: Now: $38.48 Add to Cart Compare Quick view Details sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml MSRP: Now: $39.69 Add to Cart Compare Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view Details sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen MSRP: Now: $38.48 Add to Cart Compare Quick view Details sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml MSRP: Now: $39.69 Add to Cart Compare Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen MSRP: Now: $38.48 Add to Cart Compare Quick view Details sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml MSRP: Now: $39.69 Add to Cart Compare Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml MSRP: Now: $39.69 Add to Cart Compare Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view Details sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml MSRP: Now: $22.57 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 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 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 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 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 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 sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view sku: LL01825 Luster Leaf Digital Soil Moisture Meter Product Details Digital results from 3.5 to 9.0. Instructions and plant pH preference list included. MSRP: Now: $23.02 Out of stock Compare Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view sku: HI70300-050 Hanna Groline PH Storage Solution 500ml GroLine Storage Solutions HI70300-050 Specially formulated for use with Hanna Instruments, this electrode storage solution is designed to prolong the life of pH electrodes. A healthy probe is cleaned after every use, is never dried out,... MSRP: Now: $36.00 Add to Cart 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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
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 Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view General Hydroponics | sku: 722140 GH pH Test Indicator 8 oz MSRP: $38.50 Now: $12.11 Add to Cart Compare Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view sku: HGC716376 Sure Test Pro EC / TDS / PPM Pen Sure Test Pro EC/TDS Pen The Sure Test® Pro EC/TDS Pen reads EC, TDS and temperature (ºF or ºC) with automatic temperature compensation (ATC) for more reliable conductivity measurements. Auto or manual ranging for EC (uS/mS) and TDS... MSRP: Now: $38.48 Add to Cart Compare Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected × OK
Quick view sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250 ml Bluelab® pH Probe KCI Storage Solution The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and... MSRP: Now: $39.69 Add to Cart Compare Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected
Quick view sku: HI7061-050 Hanna Groline pH electrode Cleaning Solution 500ml GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely... MSRP: Now: $22.57 Add to Cart Compare Previous 1 2 3 Next Previous 1 2 3 Next Compare Selected