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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.
To ensure solutions remain accurate:
· Avoid cross-contamination
· Decanter into a smaller plastic cup
· Discard sample after use
· Store in a cool dark place
· Store with lid secured tightly
· Keep out of reach of children