41. Emergency lighting. Code of practice for design, installation, maintenance and use of optical fibre systems Part 4, (15th July 1999) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (28 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
42. Empty enclosures for low-voltage switchgear and controlgear assemblies. General requirements. (15th June 1999) 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) ↗
43. BS ISO 14368-4. Mineral and sapphire watch-glasses. Part 4. Anti-reflective treatment (10th September 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (17 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
44. Flexible and rigid cellular polymeric materials. Accelerated ageing tests. (11th December 2019) 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) ↗
45. BS EN IEC 60938-1. Fixed inductors for electromagnetic interference suppression. Part 1. Generic specification (8th November 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (30 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
46. BS EN ISO 12543-2. Glass in building. Laminated glass and laminated safety glass. Part 2. Laminated safety glass (27th January 2020) 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) ↗
47. BS EN 61812-1. Time relays for industrial and residential use. Part 1. Requirements and tests (6th February 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (63 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
48. BS EN ISO 12543-3. Glass in building. Laminated glass and laminated safety glass. Part 3. Laminated glass (27th January 2020) 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) ↗
49. Corrosion of metals and alloys. Classification of low corrosivity of indoor atmospheres. Measurement of environmental parameters affecting indoor corrosivity Part 3, (5th February 2020) 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) ↗
50. BS EN 308. Heat exchangers. Test procedures for establishing performance of air to air and flue gases heat recovery devices. (28th May 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (83 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗