Standard [CURRENT]
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related products insoluble in quinoline. The matter soluble in quinoline of the sample to investigate are extracted at 80 °C. The insoluble matter is filtered, dried and weighed. The matter insoluble in quinoline is calculated as the ratio between mass of the unsolvable matter and the mass of the sample and indicated as percentage by mass.
This document replaces DIN 51921:1998-04 .