Pigment standards and testing methods are directly quoted in each pigment product standard. For each common inspection item, only the standard number of the referenced method is recorded in the pigment product standard. The inspection shall be conducted in full compliance with the methods, reagents, and instruments specified in the standard. Standards and inspection methods are also constantly improving. With the advancement of science and technology, new measurement methods and new instruments will be introduced continuously to improve the original measurement methods.
The following table is a comparison of the standard numbers of my country's national standard GB and ISO and ASTM pigment standard inspection methods.
Test method name | domestic standard | international standard | ASTM |
Pigment hiding power test method | HG/T 3815—2006 | ISO 6504-1 | ASTM D2805 |
Pigment Lightfastness Determination Method | GB/T1710—2008 | ISO 787-15 | |
Comparison of Thermal Stability of Pigments in Drying Paints | GB/T 1711—89 | ISO 787-21 | ASTM D2485 |
Determination of pigment density by pycnometer method | GB/T1713—2008 | ISO 787-10 | ASTM D153 |
Determination of pH value of aqueous pigment suspension | GB/T1717—1986 | ISO 787-9 | ASTM D1208 |
Comparison of Pigment Colors | GB/T1864—1989 | ISO 787-1 | ASTM D3022 |
Determination of packing volume and apparent density of pigments | GB/T 5211.4—1985 | ISO 787-11 | |
Determination of oil absorption of pigments | GB/T 5211.15—1988 | ISO 787-5 | ASTM D281 |
Comparison of Color Removing Power of White Pigments | GB/T 521116-2007 | ISO 787-17 | ASTM D2745 |
Comparison of Contrast Ratio (Hiding Power) of White Pigments | GB/T 5211.17—1988 | ISO 2814 | |
Determination of relative tinting strength and diluted color of coloring pigments (visual method) | GB/T 5211. 19—1988 | ISO 787-16 | |
Oscillation method for comparison of pigment dispersibility | GB/T 9287—1988 | ISO 787-20 | |
Pigment Dry Powder Heat Resistance Moisture Set | HG/T 3853—2006 | ||
Determination of Relative Tinting Power of Pigments and Relative Scattering Power of White Pigments | GB/T 13451.2-1992 | ||
Chromatic Aberration (CIEL.AB) | IS0 7724-3 | ASTM D1729 ASTM D2244 | |
Metal determination of pigments dissolved in hydrochloric acid As, Ba, Cd, Go, Cr, Cr61, Cu, Hg, Mn, Ni, Pb, Sb, Se, Zn Preparation of hydrochloric acid extract | ISO 3856 series of standards |
