Application of Dyestuffs to Textiles, Paper, Leather And Other Materials
The book Application of Dyestuffs to Textiles, Paper, Leather And Other Materials was written by author J Merritt Joseph Merritt Matthews Here you can read free online of Application of Dyestuffs to Textiles, Paper, Leather And Other Materials book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Application of Dyestuffs to Textiles, Paper, Leather And Other Materials a good or bad book?
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Fig. 282. — Quartz Ultra-Violet Lamp for Testing Fastness of Colors 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 week another examination is made and those samples noted which show an appre- ciable fading; these are to be classified as fairly fast. At the end of four weeks the samples are once more examined and the colors facHng in this period are noted and classifie...d as fast.* The samples which show no fading at the end of four weeks are classified as very fast.f Dye test skeins of woolen yarn with 2 per cent each of the ten following dyes, and test samples of the colors for fastness to light in the manner above described. 1. Magenta (in neutral bath). 2. Eosin (in acetic acid bath). 3. Acid Violet (in usual acid bath). 4. Tartrazine (in usual acid bath). 5. Patent Blue V (in usual acid bath). 6. Light Green SF (in usual acid bath). 7. Diamine Scarlet 3B (ammonium acetate loath) 8.
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