1. BS EN 12255-6. Wastewater treatment plants. Part 6. Activated sludge process (10th June 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (64 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Water quality. Evaluation in an aqueous medium of the 'ultimate' aerobic biodegradability of organic compounds. Method by analysis of biochemical oxygen demand (closed bottle test). (15th March 1995) 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) ↗
3. Specification for unused and reclaimed mineral insulating oils for transformers and switchgear. (15th July 1998) 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. Methods of test for petroleum and its products. Oxidation stability of inhibited mineral turbine oils Part 280, (30th November 1983) 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) ↗
5. Methods of test for petroleum and its products. Oxidation stability of straight mineral oil Part 306, (28th February 1983) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (4 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
6. Water quality. Glossary. An additional 19 terms Part 1-1.4, (31st January 1986) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (4 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
7. Water quality. Sampling. Guidance on sampling techniques Part 6-6.2, (31st January 1983) 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) ↗
8. Characterisation of sludges. Utilisation and disposal of sludges. Vocabulary. (15th October 1999) 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) ↗
9. Soil improvers and growing media. Guidelines for the safety of users, the environment and plants. (15th November 1999) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (88 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
10. BS EN ISO 54321. Soil, treated biowaste, sludge and waste. Digestion of aqua regia soluble fractions of elements. (4th November 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (46 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗