Determination of obscuration. Part III. Establishment of the obscuration factor in alcoholic strength determination
- 1 January 1982
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 107 (1274) , 533-537
- https://doi.org/10.1039/an9820700533
Abstract
The empirical value of the obscuration factor in determinations of alcoholic strength has been established as being 0.3. When applied to a series of 19 samples, the mean deviation of the calculated strength, with obscuration considered, from the true alcohol strengths determined after distillation is 0.02%V/V with a standard error of the mean of 0.05%V/V. It is recommended that the dry extract obscuration procedure be used in preference to the distillation procedure when the dry extract concentration does not exceed 10 g l–1.Keywords
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