Bluelab 4.0 pH Calibration Solution soil Backlit display to capture every

Backlit display to capture every measurement with ease

BENEFITS A great organic source of nitrogen and potassium

The Enhancer is an all natural CO2 generator made from 100% organic ingredients

Benefits of the Black & White

Bluelab 4.0 pH Calibration Solution soil Backlit display to capture everyPH 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 Solutions should be stored in a cool place out of direct sun and heat. They should be stored with the lids securely tightened.