GB/T 9578-2002 Standard reference black 3#

GB 9578-1988

GB/T 9578-2011 Industry reference carbon black 4#

GB/T 3780.1-1998 Carbon black used in rubber products—Test method for iodine adsorption number GB/T 3780.2-1994 Carbon black—Determination of dibutylphthalate absorption number GB/T 3780.4-1994 Carbon black—Preparation of sample and determination of dibutylphthalate absorption number(compressed sample) GB/T 3780.5-2002 Carbon black used in rubber products—Determination of specific surface area—CTAB test method GB/T 3780.6-1998 Carbon black used in rubber products—Tinting strength test method GB/T 3780.10-2002 Carbon black—Determination of ash GB/T 3780.18-1998 Carbon black in natural rubber—Recipe and evaluation method GB/T 3780.21-2002 Carbon black used in rubber products—Determination of sieve residue—Water washing method GB/T 9579-1998 Carbon black in SBR(Styrene-butadiene rubber)-Recipe and evaluation method GB/T 9580-1988 GB/T 15000.1-1994 Directives for the work of reference materials(1) General rules for description of reference materials in technical standards GB/T 15000.2-1994 Directives for the work of reference materials(2) The common terms and definitions of reference materials GB/T 15000.3-1994 Directives for the work of reference materials(3) General principles and statistic methods for certification of reference materials GB/T 15000.1~15000.4-1994