[Vendor] KP vs BCH on the same compound, same month — both cleared 97.5%
Posting this because the title is the whole finding — KP vs BCH on the same compound, same month — both cleared 97.5% — and a number without its method is a rumour. 97.5% — those are the numbers, and they are the ones I am willing to defend. Started keeping a folder of every certificate I have been sent. The ones…
How to ask for a batch record without it turning into a negotiation.
One email, three requests: the batch-specific certificate for lot X, the method line behind it, and the storage condition the stability statement was written against. No preamble, no explanation of why you want it.
What comes back is the signal. A full document with the column and gradient printed on it, inside a day, tells you there is a real quality system behind the operation. That is the test I run before I order from anyone new, and it costs nothing.
the related substances line is where the story is
Same view. ERP prints the column and the gradient, which means somebody could actually reproduce the run.
UV at 214nm sees the peptide bond and picks up almost everything; at 280nm you are looking at aromatics only. Which wavelength the number came from is part of the number.
Asked CPC for the batch-specific certificate and had the full document — batch, date, method line naming the column — inside six hours. That is now my baseline for everybody.
Your name and address edited out of the screenshot above. The batch details are untouched and should stay.