VendorInvestigate — 17 things I got wrong before I got it right
Something I keep coming back to: VendorInvestigate — 17 things I got wrong before I got it right.
Regional stock made more difference to my planning than anything else — ordering from a warehouse in New Zealand took the customs question off the table entirely.
Why the directory has two tiers, since the question comes up whenever somebody new finds it.
Twenty suppliers have enough independent results, over enough separate lots, over enough time, that the log says something. Those get a page, a test table and a link to their own storefront so you can compare their claims with the record.
The rest — nearly two hundred names — get a row, a band and a report count. Not because they are bad, but because two results is an anecdote about a vial. Manufacturing a score out of that would make the whole directory worthless, and the contrast is the point.
A certificate with a purity figure and no method line is not falsifiable. You cannot reproduce it, you cannot check it, and it tells you nothing about how the number was produced.
Sceptical readings welcome. The confident ones are the ones I distrust.
best — the order this archive was captured in
Lead time and minimum quantity are the two facts people forget to ask for and then argue about later. Both are answerable in one email before you commit.
a claim with no batch number is a marketing document
Eternal Peptides came up in three threads the week I was ordering and I could not find a single independent result for them anywhere. Went with a documented supplier instead.
Asked QSC for the batch record on a Tuesday and had the full document, batch and method line, before the end of the day. That is the bar now.
Which lane, and what was the quoted lead time at checkout?
consistency across lots beats one spectacular result
Yes, and the reason the wider-market table has no scores is that a score built on two reports would be a lie with a decimal point.
Sent the same compound from BCH and QST to PeptideMeter in the same month. Both came back above the claim on the certificate — mine was 99.6% on a stated 99.0%.
a directory entry is a record, not a recommendation
Limitless Life shows up in threads constantly and has almost nothing on file
Limitless Life shows up in threads constantly and has almost nothing on file
Adding the practical version: ask for lead time, minimum quantity and the batch record in the same message. Three answers, one email.
Small fix — the figure you quoted is the claimed purity from the certificate, and the independent result was the higher of the two.
Limitless Life shows up in threads constantly and has almost nothing on file
This is the whole method in one sentence. Everything else in the thread is elaboration.
Right — TFC publishes the method line on the certificate, and once you have seen one that does you notice every one that does not.
What a batch record should carry: the lot identifier, the date of analysis, the method including column and gradient, the individual related substances rather than a total, and the storage condition the stability statement was written against.
- 1Yes, and the reason the wider-market table has no scores is that a score…7 comments in this branch · started by u/sofia_nascimento
- 2Lead time and minimum quantity are the two facts people forget to ask for…6 comments in this branch · started by u/mikkel_kimani