[Lab] split one vial across Janoshik and Medutest — 97.4% and 96.2%
split one vial across Janoshik and Medutest — 97.4% and 96.2%. I will put the method line and the batch identifier up front because that is what makes this checkable.
97.4% and 96.2%. Those are measured, not estimated, and not rounded up in my favour.
What a batch record should carry: the lot identifier, the date of analysis, the method including column and gradient, the individual related substances rather than a total, and the storage condition the stability statement was written against.
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 number was produced.
I will update this if the picture changes rather than quietly leaving it up.
best — the order this archive was captured in
Lead time and minimum quantity are the two facts people forget to ask for and then argue about later. Both are answerable in one email before you commit.
ask for the batch record before you ask for a discount
a directory entry is a record, not a recommendation
What did they say when you asked for the method line?
the interesting column is spread, not maximum
Minimum order and lead time — did they quote both up front?
Hangzhou Meite Bio came up in three threads the week I was ordering and I could not find a single independent result for them anywhere. Went with a documented supplier instead.