pH Stabilizers & Calibration Solutions

HI7031L is a premium quality 1,413 µS/cm conductivity standard that is prepared against a NIST traceable potassium chloride solution.

To ensure ongoing accuracy, use Bluelab 2.77 EC Conductivity Standard Solution - 500 ml to test your Bluelab EC/PPM products.

GH pH Up Pro is a premium solution for maintaining and raising a nutrient's pH level. Base formulated using potassium hydroxide and potassium carbonate. Add a little at a time if your nutrient pH is too low in order to raise the pH to the proper level.

GH pH Down Pro is a premium solution for maintaining and lowering a nutrient's pH level. Acid formulated using food-grade phosphoric acid. Just add a little at a time if your nutrient pH is too high in order to lower the pH to the proper level.

NUTRI+® POTASSIUM HYROXIDE is a highly concentrated solution used to raise the pH level of a plant nutrient solution.

Green Gold Solutions help keep your meters in good working order. Always make sure your electrode is kept in an electrode storage solution. If dry, refill the pH meter cap. Solutions are compatible with most testers.