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ISO 3946:1982

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

Standard Details

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).

General Information

Status : Published
Standard Type: Main
Document No: ISO 3946:1982
Document Year: 1982
Pages: 3
Edition: 1
  • Section Volume:
  • ISO/TC 93. Starch (including derivatives and by-products)

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ISO 3946:1982
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