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Homepage>ISO Standards>ISO 3946:1982-Starches and derived products — Determination of total phosphorus content — Spectrophotometric method
download between 0-24 hoursReleased: 1982
ISO 3946:1982-Starches and derived products — Determination of total phosphorus content — Spectrophotometric method

ISO 3946:1982

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

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Standard´s number:ISO 3946:1982
Pages:3
Edition:1
Released:1982
DESCRIPTION

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).
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