491. Methods of test for setting glazing compounds for use in softwood and steel frames. (31st October 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (13 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
492. Complete, filled transport packages. Methods for determination of resistance to compression Part 7, (31st October 1986) 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) ↗
493. Specification for quartz crystal oscillators of assessed quality: generic data and methods of test. (31st December 1982) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (138 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
494. Laboratory fume cupboards. Safety requirements and performance testing Part 1, (31st May 1982) 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) ↗
495. Methods of equipment reliability testing. (30th June 1978) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (48 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
496. Specification for safety of household and similar electrical appliances. Particular requirements. Ultra-violet and infra-red radiation skin treatment appliances for household and similar use Part 202-202.27, (15th October 1993) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (38 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
497. Specification for performance of alarms and emergency wiring systems under fire conditions. (28th September 1990) 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) ↗
498. Specification for retreaded tyres for aircraft. (31st January 1975) 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) ↗
499. Specification for respiratory protective devices: self-contained open-circuit compressed air breathing apparatus. (30th June 1988) 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) ↗
500. Specification for installation of decorative log and other fuel effect appliances (1st, 2nd and 3rd family gases). (30th June 1986) 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) ↗