Publikuar
Specifies methods of determining the sulfate and pyrite sulfur contents of coals, including brown coals and methods of calculating the amount of organic sulfur present. Replaces the first edition.
Revises
ISO 157:1975
PUBLISHED
ISO 157:1996
90.92
Standard to be revised
20 maj 2023
Corrected by
ISO 157:1996/Cor 1:1999
IN_DEVELOPMENT
ISO/DIS 157
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