Description
This is a professional watercolor paint made of a complex sodium aluminium silicate and sulphur. It has a colour index name of PB 29 and a colour index number of 77007. The paint is rated as A(iii) for permanence and I for lightfastness.
Series number: 2
Chemical Description: Complex sodium aluminium silicate containing sulphur
Colour index name: PB 29
Colour index number: 77007
Permanence rating: A(iii)
ASTM Lightfastness Rating: I
Transparency/
Opacity: T