Bluelab pH 4.0 Calibration Solution 500 ml (6/Cs) Mother Earth® Coco + Perlite

Mother Earth® Coco + Perlite creates the perfect growing environment

When cultivating fruiting and flowering plants in soil

Sweet® helps plants maintain an optimum metabolism and a proper balance between photosynthesis and respiration

The TrimBin Filter will nest into all other Trim Bins—sold separately—for maximum processing power

Bluelab pH 4.0 Calibration Solution 500 ml (6/Cs) Mother Earth® Coco + PerlitepH 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.""