ISO 3431:1976
$13.00
Fluorure de sodium principalement utilisé pour la production de l’aluminium — Dosage des sulfates solubles — Méthode turbidimétrique
| Published By | Publication Date | Number of Pages |
| ISO | 1976-07 | 8 |
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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