Bluelab 4.0 pH Calibration Solution soil Wash fruits and vegetables before

Wash fruits and vegetables before use

Optimal ratios of potassium to silica decreases risk of contamination

Backlit display to capture every measurement with ease

BENEFITS A great organic source of nitrogen and potassium

fixtures can be  be placed 6” - 8” above the plant canopy maximizing photosynthetic response and growth

Bluelab 4.0 pH Calibration Solution soil Wash fruits and vegetables beforePH 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.