Standard

ISO 3431:1976

Jul 1976 Published

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Abstract

Applicable to products having SO4 contents of more than 0.05 % (m/m). Covers the dissolution of the test portion in hydrochloric acid and evaporation in hydrochloric acid solution for drying. Dissolution of the residue in a hydrochloric acid solution. Measurement of the turbidity obtained by precipitation, under specified conditions, of barium sulphate using a spectrophotometer at a wavelength of about 470 nm or a photoelectric absorptiometer.

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Standard from ISO
Published: 1 July 1976
Edition: 1
Document type: IS
ISBN:

Publisher ISO
Distributor ISO
ICS 71.100.10
ISO TC ISO/TC 226

ISO 3431:1976

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