90.92 Standard to be revised Nov 24, 2021
ISO
ISO/TC 183 Copper, lead, zinc and nickel ores and concentrates
International Standard
73.060.99 Other metalliferous minerals
Published
ISO 12744:2006 specifies methods for checking the precision of primary sampling, sample processing, chemical analysis, physical testing and determination of moisture content of copper, lead, zinc and nickel concentrates being carried out in accordance with the methods specified in ISO 12743, expressed in terms of standard deviations.
WITHDRAWN
ISO 12744:1997
PUBLISHED
ISO 12744:2006
90.92
Standard to be revised
Nov 24, 2021
IN_DEVELOPMENT
ISO/FDIS 12744