Bluelab 4.0 pH Calibration Solution 500ml (Case Of 6) Down To Earth BioTurf This durable Dutch tray has

This durable Dutch tray has double-sided features

alfalfa meal is a rich source of trace elements and natural growth stimulants

When you dissolve Commercial Grow into your water

up to 2 GPM

Bluelab 4.0 pH Calibration Solution 500ml (Case Of 6) Down To Earth BioTurf This durable Dutch tray hasCalibration and conductivity standard solutions a must in every grower's toolbox. The Bluelab calibration and conductivity standard solutions are essential for use with all Bluelab products for the calibration of pH and testing the cleanliness of the Bluelab Conductivity Temperature probe. Bluelab solutions are manufactured specifically for Bluelab products and are referenced to high laboratory standards to ensure your Bluelab products last longer and