I heard that the ASTM test methods are considered validated but I'm looking for written confirmation of that.
Unfortunately, ISO 11607-2-2019, p.6, chapter 4.4 Test methods, 4.4.3 "All test methods to show conformity to this document shall be validated and documented by the laboratory performing the test. Note: Annex B contains a list of test methods.
Publication of a method by a standards body does not make it validated in any laboratory".
So, for in-house testing of ASTM F1929 I have to validate the test. At the university I never (!) learned anything about validation and verification. I have been working in basic research for about 20 years, in several different university laboratories, but never ever any professor validated any method or wanted it be validated. If a new method was introduced, we put up the setup, run a couple of tests (n=3 to n=10) to familarize with the method, then we used it. Similarly, all lab balances were calibrated in house with sample weights which had never been calibrated, or had been calibrated 30 years ago. Nor did anyone ever calculate uncertainty budgets. SD was calculated, that's it. Was good enough for publication. Nowadays I wonder, how could we ever develop some kind of civilization? ;-)
So, back to F1929. First I have to validate the method, then I have to calculate the sample size for the test for each batch. For validation, somewhere I found the sample number 32 for each of the test users.
Anyone here who has validated F1929 for in house tests and could comment on this issue?
Truly yours, you will have my eternal gratitude!