pH 4.01 Calibration Solution - 100ml - Aquamaster

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