defr Glossar

SAK

German abbreviation for “Spectral Absorption Coefficient” (absorption coefficient, spectral). DIN 38404 describes the measurement of the SAK for determining the coloration and - at 254 nm - the organic loading of water. Used as cumulative parameter in drinking water treatment and in the treatment of wastewater. SAK is not normally used in English speaking countries, where it is more commonly referred to as UV 254 nm.

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