Pthalocyanine blue and green (watercolor paints)

[Jean Pule]

In article <dkra-03090...@199.35.86.208>, dk...@mmi.ix.netcom.com
says...

>I don't know when companies first started adopting the ASTM standards for
>labeling paint ingredients (mid 1990s?).

ASTM stands for AMERICAN Society for Testing Materials.
W&N is a British manufacturer and it's a compliment
to the American testing standards that W&N, or any
other non-American company, abides by those standards.
There is also a comparable and sometimes more rigid "SIS"
set of standards published by the Swedish government.