Bluelab probe KCI storage solution Hydroponic Nutrients or in a greenhouse

or in a greenhouse

Calibration fluid for both pens

GULLIES: Six strong

For nutrient testing

If it gets into your eyes

Bluelab probe KCI storage solution Hydroponic Nutrients or in a greenhouseKCI Storage Solution is designed to prolong pH probe pen life and accuracy. Designed specifically for Bluelab products. Instructions of use: Storage For pH pen Place 3 5 drops of solution into round hole of pH pen storage cap. Place storage cap onto pH pen. For all pH probes and soil pH pen Place enough solution into the probe storage cap to fully submerge the pH probe tip Hydration Place enough solution to fully submerge the pH probe tip in a plastic