Withdrawn
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.
WITHDRAWN
ISO 157:1975
WITHDRAWN
ISO 157:1996
95.99
Withdrawal of Standard
May 15, 2025
WITHDRAWN
ISO 157:1996/Cor 1:1999
PUBLISHED
ISO 157:2025