Bluelab pH 4.0 Calibration Solution 500ml Meters By growers

By growers

Easily mounts wherever needed

penetrating deeper into the plant foliage

This finely crafted tray is made to help you jump start growth

28" unbreakable wand and shut-off valve for excellent reach

Bluelab pH 4.0 Calibration Solution 500ml Meters By growersBluelab 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.