Bluelab pH 4.0 Calibration Solution

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The 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 labora tory 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 calibrated at Bluelab. The CF27.7 solution is used as a reference to ensure you have adequately cleaned the EC/CF probe. Show more