1. Methods of testing raw rubber and unvulcanized compounded rubber. Analysis of styrene-butadiene copolymers (SBR). Determination of organic acid, soap and solvent extract Part 5/5.5, (28th March 1969) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗