Independent analysis puts a HJ exenatide lot at 98.4%, against 97.3% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
Purity
Page 28 of 51 of this archive, newest first.
The 0.22 micron filter does the work, and it is the last line
Bioburden entering the filter, filter integrity, environmental monitoring and aseptic process simulation are the four pillars. The trade documents none of them.
VendorInvestigate result on a Hong Kong retatrutide lot lands 2.9 points below the supplier’s figure
A reminder that a purity figure is the output of a method, and that methods differ.
Independent analysis puts a MKM liraglutide lot at 96.2%, against 94.9% on the certificate
The Journal submitted the sample and paid for the analysis. The vendor was told in advance.
Why a dead-clean sterile filter can pass pyrogen straight through
Three compendial method families are in routine use and a fourth, based on a recombinant enzyme rather than crab lysate, is now compendial in its own right.
PeptideMeter result on a Hangzhou exenatide lot lands 3.5 points below the supplier’s figure
The result is unremarkable. What the report omits is not.
Five things a purity figure cannot tell you
An orthogonal method separates on a different physical principle, so that species co-eluting in the first are likely to resolve in the second. Two runs of the same method at…
Independent analysis puts a WWB exenatide lot at 98.5%, against 96.6% on the certificate
The result is unremarkable. What the report omits is not.
Medutest result on a Nantong orforglipron lot lands 2.6 points below the supplier’s figure
The report states the gradient, the wavelength and the integration threshold, which is more than most.
The change that weighs nothing at all
What would be needed to catch each of these, and what it would cost.
Mexico health authority warns on falsified dulaglutide pens
Reported from the analysis, not from a warning notice.
Homopeptide declines, for the 12th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Independent analysis puts a GGPeps retatrutide lot at 95.3%, against 92.8% on the certificate
The result is unremarkable. What the report omits is not.
Date of analysis, date of manufacture, and the gap between them
The interval between manufacture and analysis is the most under-read figure on the page, and the one most likely to matter by the time a vial is opened.
What changed at GGPeps in February, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
PeptideMeter result on a Wuxi cagrilintide lot lands 2.5 points below the supplier’s figure
A reminder that a purity figure is the output of a method, and that methods differ.
The anatomy of the most reproduced page in this trade
The header identifies the batch, the table records the tests, and the footer says who is answerable. Two of the three are usually incomplete.
A spectrum is a photograph of an ion, not of a molecule
The two ionisation techniques in general use produce different charge distributions, different adducts and different failure modes. Certificates almost never say which was…
Janoshik result on a Zhuhai liraglutide lot lands 1.0 points below the supplier’s figure
The report states the gradient, the wavelength and the integration threshold, which is more than most.
SGN declines, for the 16th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.