Not asking whether I should do this. Just the specific question.
Lumen Research Supply came up in another thread and I realised I had no idea whether my experience with them was normal or not.
For what it’s worth the Institute has an Index Score of 89 for them, which is where I started.
Not looking for anything other than what people have actually run into.
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Answered your second question in a DM since it was getting long, but short version is yes with caveats.
Reversed-phase HPLC with UV detection at 214nm is the standard here because the peptide bond absorbs there. If a vendor reports purity without stating the method or wavelength, the number is not comparable to anything.
Any update on this?
appreciate you writing it up, most people just post vibes
Exactly right.
EL ElinSkeptic ·
Been doing this about four years. The vendors that publish batch documents are the ones that hold up. That is basically the whole heuristic and it has not failed me yet.