Bluelab® pH 7.0 Calibration Solution Size:Solution 500 ml Teamed with the Bluelab® Connect™

Teamed with the Bluelab® Connect™ Stick

CANNA Coco coconut grind is a high quality product and complies with the highest RHP (Commercial potting soil regulation) standards

Simple push button CO2 calibration

Samsung white LEDs and Osram deep-red LEDs

When cultivating fruiting and flowering plants in soil

Bluelab® pH 7.0 Calibration Solution Size:Solution 500 ml Teamed with the Bluelab® Connect™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 Solution should be stored in a cool place out of direct sun and heat. They should be stored with the lids securely tightened."