1. Method for measurement of sound attenuation of hearing protectors. (30th September 1983) 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) ↗
2. Industrial hearing protectors. Specification for ear plugs Part 2, (30th September 1988) 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) ↗
3. Hearing protectors. Safety requirements and testing. Ear plugs Part 2, (15th December 1993) 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) ↗
4. Hearing protectors. Recommendations for selection, use, care and maintenance. Guidance document. (15th March 1994) 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) ↗
5. Hearing protectors. Safety requirements. Level-dependent earplugs Part 7, (26th November 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) ↗
6. Hearing protectors. General requirements. Earplugs Part 2, (24th November 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (22 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
7. Acoustics. Hearing protectors. Sound attenuation of hearing protectors. Subjective method of measurement Part 1, (28th June 1991) 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) ↗