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发表于 2021-3-12 11:12:55
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When using TOC in rinse-water samples (a compendial method), additional work should be done tosupport
its applicability for test samples where the TOC values could be above 500 ppb or where alinear range is to
be established. Just performing system suitability as specified in the USP requirementmay not be adequate
to demonstrate that the TOC analytical procedure could accurately analyzesamples at 1 ppm or 5 ppm. For
that reason, analytical method validation as for any other methodshould be considered. An additional
reason for formal method validation for TOC in rinse-watersamples is that the USP method is essentially
set up as a pass/fail test, not as a quantitative assay. |
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