Trying to get a straight answer on this: how do you actually verify order records. Why the directory has two tiers, since the question comes up whenever somebody new…
PeptideMeter
Every GLP Research Hub submission tagged to PeptideMeter, ranked by score. Discussed in 2 communities.
Explainer, as requested in the last thread: test results are not what most of this community thinks it is. On inter-lab disagreement, which generates more heat here…
20th 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…
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…
PeptideMeter — community peptide analytics
Vendor-level purity averages over time, built from independent results rather than vendor claims. Transparent methodology, open dataset.
Browse resultsthe reship thing finally clicked for me and I want to write it down. It is the sort of thing everyone half-believes and nobody writes down. Asked ERP for the batch…
Short version of the title, which is already short: WXT reta — PeptideMeter came back 97.1% against a claimed 97.0%. Longer version underneath. Figures up front so…
The claim in the title is exactly the claim I am making: TFC BPC — Janoshik came back 98.3% against a claimed 98.0%. Nothing implied beyond it. Since the title puts…
reship — 11 things I got wrong before I got it right. Not a hot take, just something I have not seen said plainly here. Kept a spreadsheet of quoted versus actual lead…
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…
Asking properly rather than in a comment on somebody else’s thread: how do you actually verify test results. On inter-lab disagreement, which generates more heat here…
Title says it — 5th independent test on HJ — 99.2% on a claimed 99.0%, and the trend is the interesting part — so here is the boring supporting detail that makes it…
order records are doing more work than we give it credit for. Making the case below, and I expect to lose some of it in the comments. Regional stock made more…
unpopular opinion: most of what gets said here about VendorInvestigate is guesswork — a position I have arrived at slowly and would like tested. Why the directory has…
The title is the whole question — can we stop arguing about Medutest until somebody posts a number — but here is why I am asking. What a batch record should carry: the…
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…
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 standardsPosting 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…
proposal — a flair for Janoshik posts. Disagreement welcome, but bring a concrete alternative wording. Lead time and minimum quantity are the two facts people forget to…
Medutest results are area% by default and people keep forgetting. Two minutes of reading now saves an argument later. Independent testing is worth more than a supplied…
The claim in the title is exactly the claim I am making: SSA BPC — Medutest came back 98.1% against a claimed 97.5%. Nothing implied beyond it. To save the first four…
The title is the whole question — how much of what we believe about purity actually comes from batch threads — but here is why I am asking. The template is vendor,…
The title is the whole question — why does nobody talk about purity — but here is why I am asking. If the report gives a mass spectrum as well as UV purity, say so.…
help me understand Janoshik, I have read the wiki twice — that is what I am asking, and I have already read the wiki twice. What "documentation" actually means, since…
the purity advice in here is 2 years out of date. Making the case below, and I expect to lose some of it in the comments. Pulling the figures out of the title: 2 years.…
SGN vs ERP on the same compound, same month — both cleared 97.0%. I will put the method line and the batch identifier up front because that is what makes this…
split one vial across VendorInvestigate and PeptideMeter — 97.2% and 96.8%. One vial, one service, one member paying, which is the only kind of result this board should…