Bluelab pH 7.0 Calibration Solution 500ml Bugs Improves soil porosity and moisture

Improves soil porosity and moisture retention

Most other brands on the market are not UV stabilized and tend to fall apart after a season's use

Calcitic limestone

Keep out of the reach of children

In soils or growing media

Bluelab pH 7.0 Calibration Solution 500ml Bugs Improves soil porosity and moistureBluelab pH 7. 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.