21. BS EN 384 AMD2. Structural timber. Determination of characteristic values of mechanical properties and density. (11th November 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (7 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. BS EN IEC 60268-7. Sound system equipment. Part 7. Headphones and earphones (15th August 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (59 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
23. BS EN ISO 11819-1. Acoustics. Measurement of the influence of road surfaces on traffic noise. Part 1. Statistical Pass-By method (15th December 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (57 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. BS EN ISO 16701 Corrosion of metals and alloys. Corrosion in artificial atmosphere. Accelerated corrosion test involving exposure under controlled conditions of humidity cycling and intermittent spraying of a salt solution. (12th September 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (47 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
25. BS EN ISO 16890-2. Air filters for general ventilation. Part 2. Measurement of fractional efficiency and air flow resistance (9th June 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (71 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
26. BS EN ISO 16890-3. Air filters for general ventilation. Part 3. Determination of the gravimetric efficiency and the air flow resistance versus the mass of test dust captured (28th June 2023) 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) ↗
27. BS EN ISO 16890-4. Air filters for general ventilation. Part 4. Conditioning method to determine the minimum fractional test efficiency (21st April 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (19 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
28. BS EN ISO 4628-6. Paints and varnishes. Evaluation of quantity and size of defects, and of intensity of uniform changes in appearance. Part 6. Assessment of degree of chalking by tape method (23rd March 2023) 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) ↗
29. BS EN ISO 6143. Gas analysis. Comparison methods for determining and checking the composition of calibration gas mixtures. (31st July 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (47 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
30. BS EN ISO 6926 AMD1. Acoustics. Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels. (21st October 2019) 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) ↗