$17.95 CAD

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pH 4.01 calibration solution manufactured in accordance with ISO 3696/BS3978 standards using deionized water, high purity salts, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers. Reported values are traceable to NIST Standard Reference Materials (SRMs).


  • Supplied with Certificate of Analysis
  • Color coded label for easy pH buffer value identification
  • Solution does not contain any dyes that may stain the reference cell of a pH electrode
SKU: 210000001484