21. BS EN 12120. Chemicals used for treatment of water intended for human consumption. Sodium hydrogen sulfite. (27th May 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) ↗
22. BS EN 13450-2. Aggregates for railway ballast. Part 2. Complementary information (10th June 2021) 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) ↗
23. BS EN 1463-3. Road marking materials. Part 3. Active road studs: performance requirements (20th September 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (25 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. BS EN 15522-1. Oil spill identification Petroleum and petroleum related products. Part 1. Sampling (24th December 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (31 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
25. BS EN 16479. Water quality. Performance requirements and conformity test procedures for water monitoring equipment. Automated sampling devices (samplers) for water and waste water. (9th December 2021) 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) ↗
26. BS EN 17547. Animal feeding stuffs: Methods of sampling and analysis. Determination of vitamin A, E and D content. Method using solid phase extraction clean-up and High Performance Liquid Chromatography. (13th August 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (41 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
27. BS EN 17550. Animal feeding stuffs: Methods of sampling and analysis. Determination of carotenoids in animal compound feed and premixtures by high performance liquid chromatography. UV detection (HPLC-UV). (17th September 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (49 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
28. BS EN 17555-1. Aggregates for construction works. Part 1. Characteristics (9th June 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (90 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
29. BS EN 17605 Algae, algae products and intermediates. Methods of sampling and analysis. Sample treatment. (26th October 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) ↗
30. BS EN 17679. Testing of plastics films. Tear test using trapezoidal test specimen with incision. (23rd June 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (11 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗