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Single comment threadYou are looking at one branch of the PeptideMeter question that gets asked weekly, answered properly — 21 comments in the full submission. View in context.
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c/vendorvetting·submitted 2 years ago by u/throwaway_titration

the PeptideMeter question that gets asked weekly, answered properly

Needs Sourcebranch of 6 comments

The title is the argument: the PeptideMeter question that gets asked weekly, answered properly. Here is the rest of it. The thing that decided it for me was that SWB answered a column-and-gradient question in writing without asking why I wanted to know. Started buying small deliberately, tested every lot for the…

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6 comments, started 2 years ago
u/chidi_roos898 points·2 years ago

Six orders across two years from MKM. Same packaging, same paperwork, same lead time. The most boring supplier relationship I have and I mean that as praise.

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u/zeynep_villalobos298 points·2 years ago

Six orders across two years from MKM.

Would qualify this slightly. Fewer entries means less sampling, and less sampling is not the same as a worse process.

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u/naomi_ekstrom66 points·2 years ago

a claim with no batch number is a marketing document

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u/lane_map_larrylogistics15 points·2 years ago

This. Ask for the batch record. The ones who send it inside a day have told you more than any review could.

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u/ignacio_silva266 points·2 years ago

what does the certificate actually carry — that is the whole question

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u/joaquin_petrov174 points·2 years ago

what does the certificate actually carry — that is the whole question

This is the whole method in one sentence. Everything else in the thread is elaboration.

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About c/vendorvetting

The community due-diligence desk. Vendor experiences, independent third-party test results, shipping and reship records, and the boring paperwork that separates a supplier from a story. Every substantive claim is expected to carry a receipt: an order id, a dated screenshot, or a test report from Janoshik, Medutest, PeptideMeter or VendorInvestigate.

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Janoshik Analytical

Independent HPLC and mass spec. The number you get is the number they found.

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