Calibration Solutions

The quality of a calibration buffer is often overlooked when calibrating a pH electrode. Many users make very important decisions based on the measurement obtained but overlook the importance of the quality of the buffer used when calibrating their meters. The most important aspect in obtaining an accurate measurement is the quality of the buffer that is being used. It is the reference point for the electrode response when testing a sample. The measurement is only is as good as the buffer.

At Hanna, we not only make the bottle, but also formulate and manufacture the buffer that goes in it. All buffers are produced in accordance with ISO 3696/BS3978 standards using high purity salts, deionized water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers. For our basic buffers the reported values are accurate to +/- 0.01 pH @ 25°C and are traceable to NIST Standard Reference Materials (SRMs). The can be purchased with or without a certificate of analysis. Hanna also offers millesimal buffers that have reported values are accurate to +/- 0.002 pH @ 25°C.

Buffers can be purchased in a variety of sizes and packaging. They can be purchased in single use sachets that are ideal for the user that works in the field or for someone that uses the meter infrequently. We also offer buffers that are dyed for easy identification for those that are calibrating to multiple points frequently.

Buffer Options

  • Basic buffers with +/- 0.01 pH accuracy in bottles or sachets
  • Technical buffers with +/- 0.01 pH accuracy and supplied with COA in bottles or sachets
  • Millesimal buffers with +/- 0.002 pH accuracy and supplied with COA in bottles or sachets

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