ASTM D4422-19 Neplatná

Podrobné informace

Označení: ASTM D4422-19

Datum vydání: 01.01.2019

Stran: 2

Poznámka: Neplatná

Země: Americká technická norma

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Anotace

Keywords:
Crush the laboratory sample to pass a 6.3 mm sieve. If the quantity exceeds 2.3 kg, divide the sample to obtain about 2.3 kg and crush this fraction to pass a 850 µm (No. 20) sieve. Further divide the sample to obtain a portion of approximately 200 g and crush to pass a 250 µm (No. 60) sieve. Divide again to obtain approximately 50 g. This is the analysis sample which is dried to constant weight at 110 °C +- 5 °C., ash, petroleum coke,, ICS Number Code 73.040 (Coals)