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Calibrate your pH probe or pen to pH 7.0, after that calibrate to pH 4.0 (slope) for accurate measurements.
pH instruments must be cleaned and calibrated at least monthly to provide you with the most accurate readings
pH measuring equipment is calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope).
Essential for use with all Bluelab pH products for the calibration of Bluelab pH Probes.
Bluelab pH 7.0 Calibration Solution is available in 20ml single-use solution sachet.
Bluelab solutions are manufactured specifically for Bluelab products are NIST certified and are made to a traceable standard to ensure your Bluelab products last longer and maintain accuracy.
To ensure solutions remain accurate: