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Everything you need to clean, moisturize and calibrate Bluelab pH probes .
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Increase the longevity and accuracy of your Bluelab pH testers
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Pre-calibrated liquid essential for periodic adjustment of your EC testers (approximately every month).
Growth Technology's 1,413 mS/cm EC calibration solution is an essential part of maintaining the accuracy of your EC tester. This high quality calibration solution allows you to check and adjust your EC tester for accurate measurements of the electrical conductivity (EC) of your nutrient solution.