HG/T 2250-1991 Ferric oxide black

GB 9285-1988 Raw materials for paints and varnishes—Sampling GB/T 1715 GB/T 1717-1986 Determination of pH value of an aqueous suspension of pigments GB/T 1864-1989 Comparison of colour of pigments GB/T 1864-2012 General methods of test for pigments and extenders—Comparison of colour of pigments GB/T 5211.13-1986 Determination of acidity or alkalinity of the aqueous extract of pigments GB/T 5211.15-1988 Determination of oil absorption value of pigments GB/T 5211.15-2014 General methods of test for pigments and extenders—Part 15:Determination of oil absorption value GB/T 5211.19-1988 Determination of relative tinting strength and color on reduction of colored pigments—Visual comparison method GB/T 5211.2-2003 Determination of matter soluble in water of pigments—Hot extraction method GB/T 5211.3-1985 Determination of matter volatile of pigments at 105℃ GB/T 5211.3-2020 General methods of test for pigments and extenders—Part 3:Determination of matter volatile at 105 ℃ GB/T 601-2002 Chemical reagent Preparations of standard volumetric solutions GB/T 601-2016 Chemical reagent—Preparations of reference titration solutions GB/T 603-2002 Chemical reagent—Preparations of reagent solutions for use in test methods GB/T 603-2023 Chemical reagent—Preparations of reagent solutions for use in test methods GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods