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sklademVydáno: 1981
ISO 6791:1981
ISO 6791:1981-Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of contents of quinoline-insoluble material
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| Označení normy: | ISO 6791:1981 |
| Počet stran: | 3 |
| Vydání: | 1 |
| Vydáno: | 1981 |
DESCRIPTION
ISO 6791:1981
Specifies a conventional gravimetric method for the determination. A test portion ist reated with quinoline in a beaker at 70 to 80 °C for 15 to 20 min. Then the dissolved test portion and the residue are brought to a Hartley funnel fitted with a filter pad, and are filtered. The washed and dried residue on the filter pad is weighed.