vendor is not what most of this community thinks it is — with the reasoning, because a rule without a reason gets ignored. What "documentation" actually means, since…
c/vendorvetting — new, page 4
Positions 76–100 of 130.
Something I keep coming back to: the testing question that gets asked weekly, answered properly. Independent testing is worth more than a supplied certificate for one…
Thinking out loud about this: unpopular opinion: most of what gets said here about Janoshik is guesswork. What "documentation" actually means, since people use it to…
we are measuring Medutest at the wrong time and calling it noise. Making the case below, and I expect to lose some of it in the comments. Six orders across two years…
PeptideMeter — community peptide analytics
Vendor-level purity averages over time, built from independent results rather than vendor claims. Transparent methodology, open dataset.
Browse resultsorder records are not what most of this community thinks it is, written plainly and without the jargon that usually swallows this topic. Lead time and minimum quantity…
unpopular opinion: most of what gets said here about PeptideMeter is guesswork. Not a hot take, just something I have not seen said plainly here. Kept a spreadsheet of…
Posting this as a discussion rather than a claim: the vendor advice in here is 3 years out of date. To save the first four comments: 3 years. The order I actually check…
how much of what we believe about reship actually comes from vendor threads. I would rather ask a basic question now than get this wrong quietly for two months. Asked…
we are measuring VendorInvestigate at the wrong time and calling it noise — a position I have arrived at slowly and would like tested. Inter-lab variance on this assay…
Janoshik results are area% by default and people keep forgetting — with the reasoning, because a rule without a reason gets ignored. Eternal Peptides came up in three…
The claim in the title is exactly the claim I am making: 5th independent test on SGN — 98.3% on a claimed 98.0%, and the trend is the interesting part. Nothing implied…
how much of what we believe about Janoshik actually comes from reship threads. I would rather ask a basic question now than get this wrong quietly for two months. A…
Slightly embarrassed to be asking this, but: someone explain testing to me like I have not read a paper in years. Regional stock made more difference to my planning…
Right: SSA tirz — Medutest came back 98.2% against a claimed 97.5%. I paid for this one myself, nobody sent me anything, and the receipts are in the comments. The…
The title is the whole question — how much of what we believe about Medutest actually comes from PeptideMeter threads — but here is why I am asking. The thing that…
Sigma-Aldrich — certified reference materials
Reference standards, analytical reagents and system-suitability material. If you are running your own method, start with a known.
Reference standards20th independent test on QYB — 97.9% on a claimed 97.0%, and the trend is the interesting part. That is the headline. The document, the batch and the service are below…
split one vial across PeptideMeter and VendorInvestigate — 98.4% and 98.6%, and before anyone asks: same batch throughout, single submission, no cherry-picking between…
The title is the whole question — do order records actually matter or is it forum lore at this point — but here is why I am asking. The thing that decided it for me was…
help me understand Medutest, I have read the wiki twice. Searched first, found three threads that contradict each other, hence the post. A certificate with a purity…
Asking properly rather than in a comment on somebody else’s thread: can we stop arguing about VendorInvestigate until somebody posts a number. Inter-lab variance on…
how do you actually verify reship — that is what I am asking, and I have already read the wiki twice. The wider-market rows in the directory carry a band and a report…
Trying to get a straight answer on this: how do you actually verify Medutest. Inter-lab variance on this assay runs a point or two either way. Two services disagreeing…
PeptideMeter — 8 things I got wrong before I got it right. Not a hot take, just something I have not seen said plainly here. A certificate with a purity figure and no…
The one-line version is the title: testing is not what most of this community thinks it is. The rest is why. The thing that decided it for me was that QYB answered a…
Medutest — what am I missing here. I am not trying to be the "source?" guy. I would just like a source. The order I actually check things in, for anyone building a…