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ISO 3431:1976

Sodium fluoride primarily used for the production of aluminium — Determination of soluble sulphates content — Turbidimetric method
1. 7. 1976.

Опште информације

90.93     13. 6. 2022.

ISO

ISO/TC 226

Međunarodni standard

71.100.10  

francuski   engleski  

Kupovina

Objavljen

Jezik na kome želite da primite dokument.

Apstrakt

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.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 3431:1976
90.93 Odluka o potvrđivanju standarda
13. 6. 2022.

Nacionalna preuzimanja

SRPS H.B8.177:1979  
ISS

Natrijum-fluorid, tehnički - Određivanje sadržaja rastvorljivih sulfata - Turbidimetrijska metoda

95.99   Povučen

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