pH 4 Calibration Solution 250ml - bluelab ®

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Essential growers solution for use with all pH test equipment requiring calibration like bluelab pH meters, pH probes and any brand that needs calibration. bluelab solutions are ma nufactured to very high standards and National Institute of Standards and Technology (NIST) certified this 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 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 Show more