Standard

ISO 3946:1982

Dec 1982 Published

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Abstract

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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Standard from ISO
Published: 1 December 1982
Edition: 1
Document type: IS
ISBN:

Publisher ISO
Distributor ISO
ICS 67.180.20
ISO TC ISO/TC 93

ISO 3946:1982

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