SDC Blue Wools
SDC Light Fastness Standards 1 to 8 each pattern 15x25cm
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. This forms a numerical scale of 1 to 8 where 1 has the poorest light fastness, to 8 which has the best light fastness.
2821: Blue Wool number 1
2822: Blue Wool number 2
2823: Blue Wool number 3
2824: Blue Wool number 4
2825: Blue Wool number 5
2826: Blue Wool number 6
2827: Blue Wool number 7
2828: Blue Wool number 8
Colour Fastness / Light Fastness
Country of origine : England