Application of dyestuffs to textiles, paper, leather and other materials (1920)
Matthews, J. Merritt (Joseph Merritt), 1874-1931 · New York, Wiley · leaf 439
ot rise above 3 parts per 1000. The woad vat is also known as the bastard vat, and the proportionof its ingredients may vary considerably. On a large scale the followingproportions are recommended: Content of vat 600-800 gallons. Woad 50 lbs. Bran 20 lbs. ^ Soda ash 8 lbs. Lime 3 lbs. Madder 20… … THE SODA VAT 421 for twenty-four to forty-eight hours together with a Httle caustic soda andwater. This is to insure its being converted into an impalpably fine powder,otherwise its reduction in the vat uill be difficult and incomplete. (c) The soda vat does not make use of woad, but otherwise it…
Dyes and dyeing · Textile fabrics
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