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

ISO-3946 - 1ST EDITION - CURRENT


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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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67.180.20 (Starch and derived products Including glucose syrups, etc.)

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Document Number

ISO 3946:1982

Revision Level

1ST EDITION

Status

Current

Publication Date

Dec. 1, 1982

Committee Number

ISO TC 93