Specifies a method for determining the mass distribution of the particle sizes of diameter 50 m and more. The procedure based on mechanical sieving of the crude sample, dried at 100 °C, through woven wire sieves in an atmosphere of relative humidity not more than 50 %. Weighing of each of the separate fractions. Verification, by means of a lens or microscope, of the degree of obstruction of the sieve meshes (maximum permitted obstruction: 1 %). Has also been approved by the IUPAC.

General information

  • Status :  Withdrawn
    Publication date : 1974-02
  • Edition : 1
    Number of pages : 2
  • :
    ISO/TC 226
    Materials for the production of primary aluminium
  • 71.100.10
    Materials for aluminium production

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