Pigments Lightfastness Permanence Transparent/Opaque PR101, PY83, PBk7, PG7 ASTMI **** (excellent) Semi-Transparent ASTM Approved Permanent Colours American Society for Testing and Materials, conforming to standard D4302-90.
Pigments Lightfastness Permanence Transparent/Opaque PR101, PY83, PBk7, PG7 ASTMI **** (excellent) Semi-Transparent ASTM Approved Permanent Colours American Society for Testing and Materials, conforming to standard D4302-90.
Pigments Lightfastness Permanence Transparent/Opaque PR101, PY83, PBk7, PG7 ASTMI **** (excellent) Semi-Transparent ASTM Approved Permanent Colours American Society for Testing and Materials, conforming to standard D4302-90.
