someone explain Janoshik to me like I have not read a paper in years
someone explain Janoshik to me like I have not read a paper in years. I would rather ask a basic question now than get this wrong quietly for two months. A certificate with a purity figure and no method line is not falsifiable. You cannot reproduce it, you cannot check it, and it tells you nothing about how the…
Where a supplier holds regional stock, ask which lines are actually held there rather than drop-shipped. It changes the lead time and it changes the customs question.
That reads as a recommendation and the source pages deliberately are not. They are a record you use to make your own decision.
a claim with no batch number is a marketing document
Small fix — the figure you quoted is the claimed purity from the certificate, and the independent result was the higher of the two.
Asked GL Biochem for the batch record on a Tuesday and had the full document, batch and method line, before the end of the day. That is the bar now.
the lot on the vial has to match the lot on the certificate, every time
the wider-market names in the table are there because nobody has enough data on them
consistency across lots beats one spectacular result
I would separate documentation from logistics. A supplier can be excellent at one and ordinary at the other, and averaging them hides it.
Mild pushback: a supplier with fewer entries is not worse, it is less sampled. Those are different claims and the table says so.