ISO 6999:1983

Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of density — Pycnometric method

The density of pitch used for preparation of electrodes for the production of aluminium is a property which gives a guide to its consistency of quality. Knowledge of this parameter is essential for optimum use of pitch. The determination is carried out by measuring the density in a pyknometer at 25 °C, after degassing under vacuum.

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