How to read the silence on a certificate you already hold
Our position is about documentation practice. It is not an allegation about anybody’s honesty, and we are explicit about the difference.
Purity
Page 21 of 51 of this archive, newest first.
Independent analysis puts a HJ dulaglutide lot at 98.7%, against 96.2% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
What changed at QST in July, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
South Korea health authority warns on falsified tirzepatide pens
Reported from the analysis, not from a warning notice.
PeptideMeter result on a Hong Kong mazdutide lot lands 2.6 points below the supplier’s figure
The result is unremarkable. What the report omits is not.
Sweden health authority warns on falsified exenatide 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.
What a diode array adds, and why the certificate never shows it
A diode-array detector records the whole spectrum at every time point and can confirm that a peak is spectrally homogeneous. Almost nobody prints that information.
Electrospray, MALDI, and the choice that shapes every spectrum after it
The two ionisation techniques in general use produce different charge distributions, different adducts and different failure modes. Certificates almost never say which was…
Independent analysis puts a FGP retatrutide lot at 97.1%, against 95.4% on the certificate
The result is unremarkable. What the report omits is not.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
What changed at SWB in June, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Accuracy, precision and the tolerance nobody states
Parts per million sound impressive until they are converted into daltons at the molecular weight of the thing being measured.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
Chain of custody, and where it begins
Every third-party report in this market describes a sample somebody chose to send. That choice is outside the laboratory’s control and outside its records.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
One method is one opinion
Where two methods disagree, the conservative convention is to report the lower figure. It is not universal, and whether a laboratory follows it belongs on the report.
VendorInvestigate result on a Changsha liraglutide lot lands 3.2 points below the supplier’s figure
A reminder that a purity figure is the output of a method, and that methods differ.
What changed at CPC in June, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Bacteriostatic water, sterile water, and the 0.9 per cent that makes the difference
We set out what is known, what is inferred and what is simply assumed about the fortnight after a vial is opened.