Product Information :

These are a series of 8 wool fabrics dyed with specified blue dyes to give blue wool cloths ranging from very low light fastness, to very high light fastness. They form a numerical scale of 1 to 8 where 1 has the poorest light fastness to 8 which has the best light fastness. This allows fabrics to be graded, using a grey scale for assessment of changing in color, for correlation with performance in use.

Product	Description
Class1	JIS Blue Wool Class1, size of 45x50cm
Class2	JIS Blue Wool Class2, size of 45x50cm
Class3	JIS Blue Wool Class3, size of 45x50cm
Class4	JIS Blue Wool Class4, size of 45x50cm
Class5	JIS Blue Wool Class5, size of 45x50cm
Class6	JIS Blue Wool Class6, size of 45x50cm
Class7	JIS Blue Wool Class7, size of 45x50cm
Class8	JIS Blue Wool Class8, size of 45x50cm