Abstract
Two tinctures were prepared, one by the N. F. VIII method and the other using 65 per cent alcohol as menstruum. Both were found to be above the N. F. standard when tested by the Knudson-Dresbach colorimetric method. The tincture extracted with 65 per cent alcohol was found to be stronger than the tincture prepared by the official method The latter remained clear for 6 months while the tincture containing more water precipitated slightly after six months at room temperature.
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More From: Journal of Pharmaceutical Sciences (Scientific Edition)
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