Bluelab pH 4.0 Calibration Solution 500 ml Great White Large screen digital readout

Large screen digital readout

Low battery indicator

in order to achieve a solid fertilizer base which can be used on it's own

By applying Terpenez to the substrate throughout the flowering/fruiting cycle one may encounter an overall increase in the intensity of the natural fragrances present in the garden

Bluelab pH 4.0 Calibration Solution 500 ml Great White Large screen digital readoutpH 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