Homopeptide names the synthesis and fill sites behind its catalogue
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Certificates of analysis
Page 11 of 51 of this archive, newest first.
Sending the same vial twice, under two names
Duplicate submissions under different names test within-laboratory repeatability, which is a different quantity from between-laboratory reproducibility.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
SGN names the synthesis and fill sites behind its catalogue
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What we asked twenty suppliers about stability data
What would make a difference is not a regulator. It is three lines on a certificate, all of which are already known to whoever wrote it.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
A mass on a WWB certificate is a beginning, not a conclusion
What a single-stage mass measurement supports, what it excludes, and the gap between the two.
Independent analysis puts a GL Biochem liraglutide lot at 97.5%, against 93.6% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
Tandem mass spectrometry, and the difference between weighing and reading
An intact mass measurement establishes elemental composition, at best. The number of distinct sequences consistent with a given composition is astronomically large.
The badge is about a sample. The listing is about a product.
Lot-level verification with a public report is a real and achievable thing. It exists in this market, on a minority of listings.
Medutest result on a Tianjin exenatide lot lands 2.1 points above the supplier’s stated figure
A reminder that a purity figure is the output of a method, and that methods differ.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
Independent analysis puts a SSA liraglutide lot at 96.5%, against 93.1% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
Counter-ion, water, salt: three masses with no chromatogram
The most useful single addition to any purity determination is a second separation under a different pH or on a different stationary phase, and the second-most useful is a…
CPC names the synthesis and fill sites behind its catalogue
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
WWB names the synthesis and fill sites behind its catalogue
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Singapore health authority warns on falsified tirzepatide pens
Reported from the analysis, not from a warning notice.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
Sterility is not a percentage, which is the whole difficulty
Purity, content, identity, sterility and endotoxin are five separate determinations. A single sheet of paper carrying one of them is not evidence about the other four.
The submitted sample: the weakest link in the whole system
What a laboratory can and cannot know about the provenance, storage history and representativeness of what lands on its bench.