Application of dyestuffs to textiles, paper, leather and other materials (1920)
Matthews, J. Merritt (Joseph Merritt), 1874-1931 · New York, Wiley · leaf 627
, perhaps, to a weeks exposure toordinary direct sunlight. The color of the light to which the dyed material is exposed also has much influence on its fading. Dyed colors exposed to the action of red light show practically no fading at all; exposed to yellow light the fading is slight, while… … Fig. 282.— Quartz Ultra-VioletLamp for Testing Fastness ofColors to Light. (Hanovia.) FASTNESS TO LIGHT 609 examined and note made of those which show any appreciable facUng;these are to be classified as not fast. At the end of the second weekanother examination is made and those samples noted…
Dyes and dyeing · Textile fabrics
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