Standard

ISO 331:1983

Withdrawn

Corrigendums and amendments are bought separately.

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Abstract

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.

Document information

  • Standard from ISO
  • Published:
  • Withdrawn:
  • Edition: 2
  • Version: 1
  • Document type: IS
  • ICS 73.040
  • ISO TC ISO/TC 27/SC 5

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