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pH 4.01 Calibration Solution 20ml

pH 4.01 Calibration Solution 20ml



pH 4.01 Calibration Solution 20ml

This calibration solution is a lab grade pH 4.01 buffer solution certified to meet the standard to an accuracy of ±0.01 pH removing the inaccuracies involved with mixing calibration solutions from powder.

Sachet packaging means that you get fresh solution every time. Ideal for infrequent or field use. No risk of using expired calibration solution.

This solutions are designed to help you achieve reliable and repeatable pH measurements while extending the life of your electrode.


  • pH 4.01 Calibration Buffer Solution - 20 ml
  • Fundamental for the correct use of electrodes and for obtaining the most accurate and reproducible readings
  • Sealed against light and air
  • Ideal for on-the-spot calibration
  • Simply open, insert the tester or electrode into the sachet and calibrate
  • Formulated with a 5 year expiry
  • Colour coded for easy identification


  • Accuracy Standard: ±0.01 pH
  • Value: 4.01 pH @25°C
  • Sachet Size: 20 ml
  • Certificate of Analysis: No