The chemistry of dyestuffs; a manual for students of chemistry and dyeing (1917)
Fort, M, Lloyd, L. L. (Lorenzo L.) · Cambridge [Eng.] University press · leaf 312
FIG. III. Plant for Manufacture of Diphenylanrine Products. A Autoclave. B Vat for washing, dissolving out impurities. C Table filter. … FIG. IV. Sulphonation Plant used in Manufacture of Benzene Sulphonates, etc. A Autoclave with Stirrer and Gauge. B Condenser for Excess Hydrocarbon. C Receiver. D Agitating vessel for neutralisation, "liniinp-out," etc.
Dyes and dyeing -- Chemistry
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