ISO 3946:1982 Preview

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

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

  • Current status : Published
    Publication date : 1982-12
  • Edition : 1
    Number of pages : 3
  • :
    ISO/TC 93
    Starch (including derivatives and by-products)
  • 67.180.20
    Starch and derived products

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