Bluelab pH 4.0 Calibration Solution 500ml Meters 28" unbreakable wand and shut-off

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

penetrating deeper into the plant foliage

on the farm

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

It is best to always keep the soil slightly moist

Bluelab pH 4.0 Calibration Solution 500ml Meters 28" unbreakable wand and shut-offBluelab 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.