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ISO 331:1983

Coal -- Determination of moisture in the analysis sample -- Direct gravimetric method

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Kehtetu alates 28.09.2004
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73.040 Kivisüsi
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The sample of coal is heated at 105 to 110 °C in a stream of oxygen-free, dry nitrogen and the moisture driven off is collected in an absorption tube containing a desiccant. The increase in mass of the absorption tube (after deducting the result of a separate blank determination) is due to moisture in the sample of coal.
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