21. Methods of test for sodium fluoride for industrial use. Determination of soluble sulphates content Part 7, (30th April 1980) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. Methods of testing plastics. Chemical properties. Determination of antioxidants in polyolefin compounds by ultra-violet absorption of the chloroform extract Part 4, (30th September 1977) 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) ↗
23. Methods of testing plastics. Chemical properties. Determination of antioxidants in polyolefin compounds by ultra-violet absorption of the toluene/ethanol extract in ethanol solution Part 4 Method 434C, (31st October 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (4 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. Powder metallurgical materials and products. Methods of testing and chemical analysis of hardmetals. Determination of titanium content: photometric peroxide method Part 4-4.12, (29th February 1980) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (4 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
25. Stationary source emissions. Manual method of determination of HCI. Gaseous compounds absorption Part 2, (15th August 1998) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
26. Surgical implants. Specification for surgical implants made of heat-vulcanized silicone elastomer Part 16, (28th February 1985) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗