Bluelab PH Calibration Solution pH 4 Size:pH 4.0 250ml claimed to promote immunological health

claimed to promote immunological health and be abundant in beta-glucans and other polysaccharides

Compatible with coco coir

Beneficial microbial inoculants

BNC connector allows use with all other compatible Bluelab and Autogrow products

Bluelab PH Calibration Solution pH 4 Size:pH 4.0 250ml claimed to promote immunological healthBluelab PH Calibration Solution pH 4 250mL 500mL pH instruments must be cleaned and calibrated at least monthly to provide you with the most accurate reading. pH measuring equipment is calibrated to pH 7. 0 first (buffer) then to pH 4. 0 (slope). Essential for use with all Bluelab pH products for the calibration of Bluelab pH Probes. To ensure solutions remain accurate: Avoid cross contamination Decanter into a smaller plastic cup Discard sample after