SDCE ISO Blue Wool Lightfastness Standard

SDCE ISO Blue Wool Lightfastness Standard

Test Standards: ISO 105 B02
Description: Size: 15 x 25 cm, pc

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. This allows fabrics to be graded, using a Grey Scale for Change in Colour, for correlation with performance in use. This is used to predict the suitability for a given end use; typically apparel would be a minimum of grade 4 whilst furnishings would require a grade 6. They are used in the ISO 105 B series of tests and can be used in conjunction with the Humidity Control fabric for machine calibration.

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