PH Meters

Hanna GROLINE DIRECT SOIL/SUBSTRATE PH ELECTRODE FOR HI9814 (HI12943)

The HI1294D is a pH electrode for the direct measurement of pH in soil and soilless substrates.  The HI1294D is a glass body, refillable, single junction pH electrode and is compatible with the HI9814 Groline portable pH/EC/TDS meter. ·...

GH pH Test Kit 1 oz

General Hydroponics® pH Test Kit General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test vial. Many experienced...

GH pH Test Indicator 8 oz

Bluelab pH Probe KCI Storage Solution 100 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...

Bluelab pH 7.0 Calibration

Bluelab® pH 7.0 Calibration Solution "pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope). Calibration...

Bluelab pH 4.0 Calibration

Bluelab® pH 4.0 Calibration Solution "pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope). Calibration...

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...

Hanna Groline pH 4.0 Calibration 500ml

GroLine 4.01 pH Calibration Solutions  GroLine pH solutions are the only buffers in the market to come with a certificate to guarantee their accuracy. 

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,...

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...

Rapitest Soil pH Meter 716750

Product Details Determines Soil Acidity / Alkalinity Insert Directly into soil substrate Digital results from 3.5 to 9.0. Instructions and plant pH preference list included.

Bluelab Probe Care Kit pH & Conductivity

Bluelab® Probe Care Kit pH & Conductivity Everything you need to clean, hydrate and calibrate pH probes as well as clean and test conductivity (ppm/EC) probes. The instrument is only as accurate as the probe is clean. Accurate readings simplify...