A treatise on colour manufacture : a guide to the preparation, examination, and application of all the pigment colours in practical use (1908)
Zerr, Georg, Rübencamp, R. (Robert), Mayer, Charles · London : C. Griffin · leaf 38
ended here. It is made of oak throughout, and any metal fittings that cannot be dispensed with are preferably made of copper, that metal being best able to resist the action of the different salts, with a few exceptions only. Iron fittings, whether wrought or cast, should be avoided as much as… … pipes are arranged in the gangway between the rows, with branch pipes and taps for each vat. Between the pipes and the ceiling runs the shafting for driving the whole of the stirring machines, each of which can, of course, be stopped or started separately. The tanks must not stand directly on the…
Pigments · Coloring matter · Dyes and dyeing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.