Bluelab 7.0 pH Calibration Solution, 20 ml Sachets, case of 25 lighting_accessories The high strength-to-weight ratio of

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Bluelab 7.0 pH Calibration Solution, 20 ml Sachets, case of 25 lighting_accessories The high strength-to-weight ratio ofCalibration 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