pat_auckland said:The useful checklist is about verifiability rather than presentation.
Saving this. It is the first explanation that did not require me to already understand it. Adding it to my notes with a link back to this thread.
From the other side of the consultation, briefly. It helps to say which part of this you are uncertain about. A precise question gets a precise answer; a general one gets everybody’s favourite anecdote.
Dr.EndoIndy said:Vendor reputation tracking for vendor vetting: I maintain a personal spreadsheet with every order I've placed — date, vendor, batch number, Janoshik…
I am going to disagree with the direction of travel here. The thread has converged on the tidiest answer rather than the best-supported one, and those are not the same thing.
Certified reference materials, analytical reagents, and research-grade standards for peptide verification. Trusted by laboratories worldwide.
Shop Reference StandardsThe figures, for anyone assembling their own picture. Say what you would expect to see if you were wrong, before you look. It is a small discipline and it changes what you notice.
Moderator note: the sourcing question belongs in the vendor section and has been split out. Carry on.