Topic summary

Second pass at: What "verified" means on our vendor pages, stated narrowly

Sourcing › Vendor reports Janoshik Analytical documentation quality third-party testing batch & lot numbers certificate of analysis Solved

This is a generated summary. It shows the 9 most-liked posts from a topic of 103, 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.

j.hartmannTL2 Moderator12 Jul 2025#1

Second pass at: What "verified" means on our vendor pages, stated narrowly — setting out what I have, and where I think it stops being reliable.

A logistics question, since the answers here are usually better than anywhere else I have looked.

Parcel despatched 15 days ago, tracking last updated 4 days ago at a customs facility, no further movement. Cold pack included at despatch.

Two questions. First, at what point is this genuinely a problem rather than an ordinary delay? Second, if it does arrive, what is the actual decision process for assessing it, as opposed to the two extremes people usually offer?

54 likes 13mo

vial_slopeTL3Regular Solution31 Jul 2025#4

I disagree with the reply above, and I think the disagreement is substantive rather than terminological.

The distinction being drawn does not survive when you look at the published data for this specific question. I would be glad to be shown wrong on this, because the version I am arguing against is more convenient.

7 likes 12mo

WendelboeTL2Member26 Aug 2025#10

Structured report format: compound, lot, independent testing service, method as reported, result, and the certificate figure for the same lot. One lot is one lot. It becomes a pattern at three or four, and it becomes a disputed record when asked and not explained.

28 likes 11mo

MSaarinenTL3Regular13 Sep 2025#15

Temporal patterns: if results from a supplier were good two years ago but have deteriorated recently, that is information. If they have been consistent over years, that is also information.

32 likes 10mo

b.friskTL2 Moderator22 Oct 2025#27

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.

28 likes 9mo

y.rahimiTL2 Moderator21 Nov 2025#37

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.

30 likes 8mo

m.silvaTL2 Moderator29 Nov 2025#40

Worth separating two things that post #36 runs together.

Date the report: when the analysis was done matters. Material can degrade in storage. A report from two years ago is still useful but is not evidence about the current state of the same supplier's stock.

29 likes 8mo

IMainwaringTL3Regular7 Dec 2025#43

I read post #41 twice before replying, because I had assumed the opposite.

31 likes 8mo

m.rasmussenTL2 Moderator9 Mar 2026#79

Pattern across lots: a single result is a data point. Three or four results from the same supplier showing a consistent pattern becomes a record worth discussing. Two results that disagree might just be measurement variation.

29 likes 5mo

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