41. Foods of plant origin. Multimethod for the determination of pesticide residues using GC- or LC-based analysis following acetonitrile extraction/partitioning and cleanup by dispersive SPE. Validation data of the modular QuEChERS-method. (30th April 2017) 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) ↗
42. Footwear. Critical substances potentially present in footwear and footwear components. Determination of phthalate with solvent extraction Part 1, (28th April 2021) 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) ↗
43. Footwear. Critical substances potentially present in footwear and footwear components. Determination of phthalate without solvent extraction Part 2, (26th July 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (30 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
44. Fortified milk powders, infant formula and adult nutritionals. Determination of total biotin by liquid chromatography coupled with immunoaffinity column clean-up extraction. (21st April 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) ↗
45. General methods of test for pigments and extenders. Determination of matter soluble in water (cold extraction method) Part 8, (1st August 1995) 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) ↗
46. General methods of test for pigments and extenders. Determination of matter soluble in water. Hot extraction method Part 3, (1st August 1995) 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) ↗
47. Iron ores. Determination of sulfur content. Barium sulfate gravimetric method Part 1, (22nd March 2023) 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) ↗
48. Jewellery and precious metals. Determination of gold. Cupellation method (fire assay). (29th March 2021) 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) ↗
49. Leather. Chemical determination of chromium(VI) content in leather. Thermal pre-ageing of leather and determination of hexavalent chromium. (21st September 2021) 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) ↗
50. Leather. Chemical determination of formaldehyde content. Method using high-performance liquid chromatography Part 1, (9th March 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (18 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗