BlueLab Calibration Solution - 4.0 pH Size:250 ml and the one to reorder

and the one to reorder when that vault's original turns rigid

epoxy-potted

You can use these with any of your favorite growing media

½" and ¾" fittings included

BlueLab Calibration Solution - 4.0 pH Size:250 ml and the one to reorderThe Bluelab Calibration Solutions are a very necessary part of a growers toolbox. These solutions are manufactured specific to the calibration process and referenced to high laboratory standards by Bluelab. They are required for the calibration of pH meters, pH monitors and controllers. Regular cleaning and calibrating of pH measuring equipment ensures accurate readings. Bluelab's EC CF equipment does not need calibrating, as they are all factory