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Topic summary

Reconciling a supplier certificate with an independent result

This is a generated summary. It shows the 5 most-liked posts from a topic of 25, 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.
FF
f.fonsecaTL27 Oct 2025#2

Comparing your result to somebody else's on a different lot is not a comparison of suppliers. Lot is the unit and it should be in every report.

23 likes 10mo
EO
e.okaforTL214 Oct 2025#6

Building on post #3 rather than restating it.

Reports naming a supplier need the evidence attached, which is a guideline rather than a formality. It is what makes the record usable and it is what keeps it fair.

I would want a second opinion before relying on that.

31 likes 9mo
NN
n.nakamuraTL219 Oct 2025#9

Post #7 and I disagree about the size of the effect, not about the direction.

Blind submission is worth the effort: have someone else relabel the sample so neither you nor the laboratory knows which supplier it came from until the result is back. Blind results change minds; self-selected results do not.

I am describing what is, rather than arguing for what should be.

24 likes 9mo
SV
s.vogelTL21 Nov 2025#20

Lot matching: confirm the lot number on the certificate matches the lot number on the vial. A result from a different lot is not evidence about your vial.

Worth reading the earlier posts in this thread before acting on mine.

19 likes 9mo
NZ
n.zielinskiTL23 Nov 2025#21
d.petrescu, post #1: Reconciling a supplier certificate with an independent result — setting out what I have, and where I think it stops being reliable. Reconciling a supplier certificate: setting out the arithmetic in full, because I have had to do it twice and I would rather nobody else did. Every step is shown. If the answer is wrong the error will be… Go to post

What "verified" means on our pages: specific lots were independently measured on stated dates by named services and results were consistent with the supplier's documentation. It is not a recommendation and does not extend to untested lots.

27 likes in reply to #1 9mo

Read the full topic (25 posts)

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