[Question] how do you actually verify vendor
how do you actually verify vendor, and I want the answer with the reasoning attached rather than just the conclusion. Sent the same compound from QST and SGN to VendorInvestigate in the same month. Both came back above the claim on the certificate — mine was 99.5% on a stated 99.0%. Peptidology came up in three…
What "documentation" actually means, since people use it to mean four different things in the same thread.
A certificate of analysis is one document about one lot. A batch record is the manufacturing trail behind that lot. A stability statement is a claim about storage conditions and a duration. A method line is how the number on the certificate was produced.
You can ask for all four. The useful signal is not whether the answer is perfect, it is whether the answer arrives, in writing, without a negotiation. JEEP sends the method line unprompted; once you have seen that you stop accepting a bare number from anybody.
Left up. It names an operation, it carries a date and a lot, and it is written as a report rather than an accusation.
Left up.
Adding the practical version: ask for lead time, minimum quantity and the batch record in the same message. Three answers, one email.
a directory entry is a record, not a recommendation
[deleted]
Which lane, and what was the quoted lead time at checkout?
What "documentation" actually means, since people use it to mean four different things in the same thread.
reads_the_wiki is describing the batch record test and it is the fastest signal available before you spend anything.