21. Soil and water quality. Guidance document on designing an interlaboratory trial for validation of biotests. (29th November 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (52 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. Soil improvers and growing media. Sampling and sample preparation. (11th March 2022) 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) ↗
23. Soil improvers and growing media. Terminology. (16th March 2022) 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) ↗
24. Soil improvers. Determination of specific parameters. (31st March 2022) 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) ↗
25. Soil quality. Assessment of genotoxic effects on higher plants. Vicia faba micronucleus test. (4th June 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (26 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
26. Soil quality. Test for estimating organic matter decomposition in contaminated soil. (22nd November 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (26 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
27. Soil, treated biowaste, sludge and waste. Digestion with a hydrochloric (HCl), nitric (HNO3 ) and tetrafluoroboric (HBF4 ) or hydrofluoric (HF) acid mixture for subsequent determination of elements. (30th November 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (40 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
28. Tracked Changes. Cereals, pulses and by-products. Determination of ash yield by incineration. (20th March 2023) 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) ↗