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sklademVydáno: 1976-07-01
ISO 3431:1976
ISO 3431:1976 - Sodium fluoride primarily used for the production of aluminium — Determination of soluble sulphates content — Turbidimetric method
Formát
Dostupnost
Cena a měna
Anglicky PDF
K okamžitému stažení
Tisknutelné
1258 Kč
Francouzsky PDF
K okamžitému stažení
Tisknutelné
1258 Kč
Anglicky Tisk
Skladem
1258 Kč
Francouzsky Tisk
Skladem
1258 Kč
| Označení normy: | ISO 3431:1976 |
| Vydání: | 1 |
| Vydáno: | 1976-07-01 |
| Počet stran (Anglicky): | 3 |
| Počet stran (Francouzsky): | 3 |
Popis
ISO 3431:1976
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.