Ionization buffers are used for the suppression of physical, ionic, and chemical interferences for use with flame atomic absorption spectroscopy. These are buffers added to increase the free-electron concentration by the flame gases, thus repressing and stabilizing the degree of ionization. A fast universal calibration method was described by Schuhknecht and Schinkel, who recommended the addition of cesium chloride and aluminum nitrate to the samples and standard solutions in the flame emission spectroscopic determination of sodium, potassium, and lithium.

All Ionisation Buffer produced by CPAchem use high-purity metals or salts in sub-boiling distilled acids. CPAchem's quality system is currently ISO 9001 certified. CPAchem's quality control laboratory is ISO 17025:2005 registered/certified. CPAchem is ISO 17034:2016 registered/certified while demonstrating technical competence in the field of Reference Material Producer.”

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