High quality solutions formulated for calibrating pH probes. Bluelab® calibration solutions are essential for use with all Bluelab® products.

Cyco pH Up raises the total pH value of the made nutrient solution. Recommended pH for most plants is 5.5 to 6.5.

Cyco pH Down lowers the total pH value of the made nutrient solution. This product lowers nutrient pH. Recommended pH for most plants is 5.5 to 6.5.

HI70032P is a premium quality 1,382 mg/L (ppm) TDS calibration solution standardized with a conductivity meter that has been calibrated with potassium chloride NIST 2202 SRM in deionized water for analytical use in accordance with ISO 3696/BS3978.

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.

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.