21. Intrinsically safe electrical apparatus and circuits for use in explosive atmospheres. (24th February 1958) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. Leather. Physical and mechanical tests. Determination of water vapour permeability. (17th February 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (18 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
23. Machines for surface cleaning and pre-treatment of industrial items using liquids or vapours. Common safety requirements Part 1, (31st July 2010) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (44 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. Methods of testing vitreous enamel finishes. Apparatus for testing with acid and neutral liquids and their vapours Part 14, (30th November 1984) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
25. Methods of testing vitreous enamel finishes. Determination of resistance to condensing hydrochloric acid vapour Part 10, (23rd December 1987) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
26. Oxygen monitors for patient breathing mixtures. Particular requirements. (15th June 1999) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (24 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
27. Plastics. Phenol-formaldehyde mouldings. Detection of free ammonia. (30th April 1980) 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) ↗
28. Protective clothing. Protection against liquid and gaseous chemicals, including liquid aerosols and solid particles. Test method. Determination of leak-tightness of gas-tight suits (Internal Pressure Test). (15th October 1994) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
29. Railway applications. Tank wagons. Bottom emptying devices for liquid products including vapour return Part 2, (31st January 2003) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
30. Rubber and plastics hoses, tubing and assemblies for use with propane and butane and their mixture in the vapour phase. Assemblies Part 2, (30th October 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (20 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗