SDC Light Fastness Fabric
Light Fastness Standards 1 to 8
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 change in colour, for correlation with performance in use. They are used in the ISO 105 B series of tests.
Humidity Control Fabric
This is an Azoic-Dyed cotton fabric with specified fading properties, which vary with the amount of relative humidity. It is used as a calibration tool for light fastness testing. When the relative humidity of the light fastness testing machine is correctly set it will fade at an identical rate to the light fastness standard Number 5.
SDC Light Fastness Fabrics
2821 SDC Blue Wool No. 1 BW1-8: ISO B01-B05 Per pattern
2822 SDC Blue Wool No. 2 Per pattern
2823 SDC Blue Wool No. 3 Per pattern
2824 SDC Blue Wool No. 4 Per pattern
2825 SDC Blue Wool No. 5 Per pattern
2826 SDC Blue Wool No. 6 Per pattern
2827 SDC Blue Wool No. 7 Per pattern
2828 SDC Blue Wool No. 8 OBA- free Per pattern
2836 LFS Mounting Card OBA- free (13 x 4.5cm) 200 piece pack
2837 LFS Mounting Card OBA- free (14cm x 7cm) 100 piece pack
3605 SDC Humidity Control Fabric ISO 105 B02 per pattern
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