Bluelab® pH 4.0 Calibration Solution 250ml Trimming Cal-Mag™ Plus is a highly

Cal-Mag™ Plus is a highly fortified calcium

Athena Pro Grow is a balanced soluble fertilizer blend formulated for commercial cultivators to streamline irrigation

but our rolls can be used with a variety of systems

Coco-Wet lowers the surface tension between plant leaves and the products being sprayed on them

Stack helps correct minor potassium deficiencies

Bluelab® pH 4.0 Calibration Solution 250ml Trimming Cal-Mag™ Plus is a highly"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."