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DIN 22020-2:1998-08
Investigations of raw material in hard-coal-mining - Microscopical examination of hard coal, coke and briquettes - Part 2: Preparation of polished surface from lump material and particulate blocks
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Summary
The standard describes the production of solid samples for microscopic investigations with top illumination. The standard also contains quality specifications. While the methods of production may only serve as examples, the quality specifications are mandatory.
Technical characteristics
| Publisher | Deutsche Institut für Normung e.V. (DIN) |
| Publication Date | 08/01/1998 |
| Page Count | 4 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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