251. Electromagnetic compatibility (EMC). Testing and measurement techniques. Digital methods for the measurement of power quantities of modulated or distorted signals Part 4-40, (24th March 2020) 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) ↗
252. Hydrogen generators using water electrolysis. Industrial, commercial, and residential applications. (20th April 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (58 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
253. Gaseous hydrogen. Fuelling stations. General requirements Part 1, (20th April 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (184 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
254. BS ISO 21716-1. Ships and marine technology. Bioassay methods for screening anti-fouling paints. Part 1. General requirements (1st April 2020) 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) ↗
255. BS EN 50397-1. Covered conductors for overhead lines and the related accessories for rated voltages above 1 kV AC and not exceeding 36 kV AC. Part 1. Covered conductors (20th March 2020) 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) ↗
256. Cigarettes. Determination of ammonia in cigarette mainstream smoke using ion chromatography. (17th April 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) ↗
257. Condition monitoring and diagnostics of machines. Hydroelectric generating units. (30th April 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (72 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
258. BS ISO 7905-2. Plain bearings. Bearing fatigue. Part 2. Test with a cylindrical specimen of a metallic bearing material (8th April 2020) 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) ↗
259. Code of practice for hearing-loop systems (HLS). (29th April 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (114 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
260. Railway applications. Braking. Relay valves. (7th April 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (54 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗