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ISO 3946:1982

Starches and derived products -- Determination of total phosphorus content -- Spectrophotometric method
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ISO 3946:1982

Starches and derived products -- Determination of total phosphorus content -- Spectrophotometric method

PUBLISH DATE 1982
ISO 3946:1982

Destruction of the organic substances by digestion with a sulpho-nitric mixture and conversion of phosphates to orthophosphates. Formation of a phosphomolybdate. Measurement of the intensity of the blue colour at a wavelength of 825 nm. The method applies to contents up to 5 % (m/m).

SDO ISO: International Organization for Standardization
Document Number ISO 3946
Publication Date Dec. 1, 1982
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 93
Publish Date Document Id Type View
Dec. 1, 1982 ISO 3946:1982 Revision