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[On the correction of systematic errors of analytical methods used in the content uniformity test]
Abstract:
In this paper, the constant and proportional systematic errors of analytical methods for the content uniformity test were studied with reference to the accurate analytical method for the assay. Seven monographs of tablets admitted to USP(XXII), Ch P (1985, 1990) and JP(XI) were taken as cases in point and the systematic errors of two of them, i.e. digoxin and nitroglycerin tablets, were ascertained by the test of significance. To improve the accuracy of analytical methods for the content uniformity test, a correction formula more reasonable and convincing than that of USP (XXI, XXII) was proposed, and its theoretical basis described briefly.
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