1. BS EN ISO 21068-1. Chemical analysis of raw materials and refractory products containing silicon carbide, silicon nitride, silicon oxynitride and sialon. Part 1. General information and sample preparation (5th June 2023) 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) ↗
2. BS EN ISO 21068-2. Chemical analysis of raw materials and refractory products containing silicon carbide, silicon nitride, silicon oxynitride and sialon. Part 2. Determination of volatile components, total carbon, free carbon, silicon carbide, total and free silicon, free and surface silica (5th June 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) ↗
3. BS EN ISO 21068-3. Chemical analysis of raw materials and refractory products containing silicon carbide, silicon nitride, silicon oxynitride and sialon. Part 3. Determination of nitrogen, oxygen and metallic and oxidic constituents (5th June 2023) 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) ↗