Bluelab pH 4.0 Calibration Solution 500ml Pro-Mix Blade Diameter 17

Blade Diameter 17

penetrating deeper into the plant foliage

Water turf thoroughly after application

Ideal for use with Alfred's Seedling Tray and Alfred's Propagation Dome (sold separately)

Zip-Zag Original Sandwich Bags (25 bags per pack)

Bluelab pH 4.0 Calibration Solution 500ml Pro-Mix Blade Diameter 17Bluelab 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.