Bluelab® pH 4.0 Calibration Solution Dehumidifier This brilliant way of delivering

This brilliant way of delivering CO2 into the atmosphere is all natural and just takes lukewarm water to activate

Constructed using 1/8 in ABS plastic

Sensizym practically supercharges your plants’ “digestive system” by scavenging your growing medium substrate and recycling organic waste and other debris in the root zone into usable carbohydrates that fuel bud growth

Available Phosphate (P₂O₅)

Dimensions: 15 in long x 9-1/2 in wide x 3-3/4 in high

Bluelab® pH 4.0 Calibration Solution Dehumidifier This brilliant way of deliveringBluelab pH 4. 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."