PH Calibration

GH pH Down Liquid * In Store Pick Up Only

General Hydroponics® pH Down Liquid The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level.

GH pH Up Liquid * In Store Pick Up Only

General Hydroponics® pH Up Liquid This Base solution is formulated using potassium hydroxide and potassium carbonate. Add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level.

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,...

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...

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...

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...