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ISO 2218:1972

Crude sodium borates for industrial use — Determination of loss in mass after heating at 900 degrees C
1. 7. 1972.
95.99   Povučen   27. 5. 2002.

Опште информације

95.99     27. 5. 2002.

ISO

ISO/TC 47

Međunarodni standard

71.060.50  

francuski   engleski  

Kupovina

Povučen

Jezik na kome želite da primite dokument.

Apstrakt

In the case of anhydous salts, the weighing of the test portion is carried out directly into platinum crucible. Transfering of the crucible in a muffle furnace, maintained at (900 +- 50) °C. In case of hydrated sals, the weighing is also carried out directly; the test porion is previously heated in the flame of a Bunsen burner. Covering and placing of the crucible so that the Bunsen flame plys on its lid. Subsequent transfer of the covered crucible to the muffle furnace. Calculation of the loss in mass by difference after heating.

Životni ciklus

TRENUTNO

POVUČEN
ISO 2218:1972
95.99 Povučen
27. 5. 2002.

Nacionalna preuzimanja

SRPS H.B8.347:1976  
ISS

Natrijum-borat, tehnički - Određivanje gubitka mase posle žarenja na 900°C

95.99   Povučen

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