Dr.LipidDallas said:Vendor reputation tracking for vendor vetting: I maintain a personal spreadsheet with every order I've placed — date, vendor, batch number, Janoshik…
Adding a me-too, because a thread of one person's experience is not much use.
One concrete data point for the thread. The boring version of this is the one that works, and the boring version is: measure a baseline, change one variable, wait, measure again under the same conditions. Nobody wants that answer and it is still the answer.
One thing that is still open after raj_cambridge’s answer:
How people are distinguishing a supplier having a bad batch from a supplier on the way out?
Trusted third-party HPLC & mass spectrometry analysis. Verify peptide purity with the lab the community relies on. Independent. Accurate. Transparent.
Verify Your PeptidesEst. 1998. The synthesis house behind the vials you send for testing. ISO 9001 and cGMP certified, 1,500+ staff, batch-specific COA with every order.
Browse GL BiochemBethLabQueen said:The boring version of this is the one that works, and the boring version is: measure a baseline, change one variable, wait, measure again under the…
This is where I part company with the consensus forming above. I would resist the confidence. Half of what this board was certain about two years ago has since been quietly dropped, and nobody went back to correct the threads.
Moderator note: two posts asking for a source have been merged into one. Please search the thread before asking again. No action needed from anybody.