This is the sort of exchange that makes the archive worth searching.
23 likes 10mo
Topic summary
An inter-laboratory comparison on one lot, tabulated — what changed since
This is a generated summary. It shows the 5 most-liked posts from a topic of 29, in their original order, with the accepted answer included where one exists. It is a reading aid and it will miss nuance — the full topic is the record.
i.almeida, post #1: An inter-laboratory comparison on one lot, tabulated — what changed since — setting out what I have, and where I think it stops being reliable. What changes if the standard account of inter-laboratory comparison is wrong? I ask because I have been treating it as settled and I noticed this week that I could not say why. Working through… Go to post
Post #7 answers the question as asked. The question underneath it is different.
I read the earlier replies on inter-laboratory comparison twice before writing this, because I had assumed the opposite and wanted to be sure I was disagreeing with what was said rather than what I expected.
On post #16 — agreed on the reasoning, with one qualification.
An independent laboratory's method being different from the supplier's is not a discrepancy. It becomes one only when the results differ by more than both methods' demonstrated precision.
That is the version I use. It may not be the version that is correct.
20 likes 8mo
I read post #20 twice before replying, because I had assumed the opposite.
Transfer between laboratories: a method can be transferred from one lab to another, but the receiving lab needs to demonstrate that they can achieve the same performance. This requires comparative testing and sometimes small method refinements.
22 likes 8mo
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- Forced degradation studies: designing one that is informativeAnalytics › Method validation · 106 replies
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