These technical calibration buffers produced in accordance with ISO 3696/BS3978 standards using high purity salts, deionised water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers.

• Technical buffer solutions with certificate
• Accuracy of ±0,01 pH at 25 °C
• Colour coded label for easy pH buffer value identification

Temperature chart of the actual pH value at various temperatures are printed on each sachets. Solutions are free from any dyes that may stain the reference cell of a pH electrode.