Pigments, paint, and painting; a practical book for practical men (1893)
Terry, George · London, E. & F.N. Spon; New York, Spon & Chamberlain · leaf 273
ation, it may be collected and used again. Before the sulphur vapour reaches the condenser, the last traces of sulphide carried along with it are collected by the interposition of metallic screens or sieves, placed between the sulphur condenser and the apparatus. In carrying out the process, care… … Fig, 29. — Appaeatus for Making Zinc Sulphide. can be effected with little difficulty. Impurities in the zinc and sulphur are of little consequence provided they are not volatile, and not of such a nature that they would detract from the whiteness of the sulphide of zinc formed. The accompanying…
Pigments · Paint
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