Photoelectric Determination of Nicotinic
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Jones, Wm.S.
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Article
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1941
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Elsevier
β 371 KB
Some 25 lots of synthetic riboflavin have been tested. The solutions were made up in the same manner as the standard solution of riboflavin and compared with the standard riboflavin. 4.75% of the samples assayed 950,000 pg./Gm. 4.75% of the samples assayed 960,000 pg./Gm. 9.5% of the samples assaye