ISO 5437:1992

Acid-grade and ceramic-grade fluorspar — Determination of barium sulfate content — Gravimetric method

Datum objavljivanja: 3. 12. 1992.

95.99 Povučen 3. 3. 2010.

Опште информације

Trenutna faza: 95.99 Effective date: 3. 3. 2010.

Inicijator: ISO

Pripada: ISO/TC 175

Vrsta: Međunarodni standard

ICS: 73.080

Jezik: francuski engleski

Kupovina

Status: Povučen

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Apstrakt

The method is based on evaporation to dryness of a test portion in the presence of hydrofluoric acid and concentrated sulfuric acid, extraction of the soluble salts from the mixture, filtration, drying and weighing of the residual barium sulfate. Applies to products having barium sulfate contents equal to or greater than 0,1 % (m/m).

Životni ciklus

PRETHODNO

POVUČEN
ISO 5437:1988

TRENUTNO

POVUČEN
ISO 5437:1992
95.99 Povučen
3. 3. 2010.