Matches in DBpedia 2014 for { ?s ?p The Blue Wool Scale measures and calibrates the permanence of colouring dyes. Traditionally this test was developed for the textiles industry but it has now been adopted by the printing industry as measure of lightfastness of ink colourants.Normally two identical dye samples are created. One is placed in the dark as the control and the other is placed in the equivalent of sunlight for a three-month period.. }
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- Blue_Wool_Scale comment "The Blue Wool Scale measures and calibrates the permanence of colouring dyes. Traditionally this test was developed for the textiles industry but it has now been adopted by the printing industry as measure of lightfastness of ink colourants.Normally two identical dye samples are created. One is placed in the dark as the control and the other is placed in the equivalent of sunlight for a three-month period.".