pH 7 Calibration Solution - 100ml - Aquamaster

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Essential growers solution for use with all pH test meters & electrodes / probes requiring calibration. Manufactured & certified to National Institute of Standards and Technology ( NIST) traceable standard ensures your equipment lasts longer and maintains accuracy. Please note: pH measuring equipment is always calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope) second. Avoid cross-contamination, Do not return any used test liquid back into the main container to avoid contamination. Decanter into a smaller plastic cup Discard sample after use Store in a cool dark place between 15-25 °C Store with lid secured tightly Keep out of reach of children Show more