Page 16 of 32 · 749 questions tagged coa.
What I have: a GLP-1 receptor agonist · lot-specific certificate. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not…
Numbers first: 97.1% · Janoshik · 96.8%. Before I write this off, I want to check whether it is a known failure mode. I have the lot number, the certificate and the…
Conditions: 96.4% · method section. The figures are clear enough; the question is what they mean and what they do not. I can supply the numbers if the specifics…
For reference: PeptideMeter · Tianjin Finder Chemical. I want to understand what this actually establishes, as opposed to what it is being used to imply. My concern…
What I am working with: dulaglutide · sampling plan. I have read the primary source rather than the summary, which has left me with more questions. I understand the…
The specifics, since they change the answer: method section · QST. I have the document in front of me and I can read the numbers. What I cannot do is interpret them.…
What I have: an HPLC purity test · dulaglutide. I have used one of these for a while and I am considering switching, which requires a reason. What I care about is…
Vendor listings say "sterile" and "sterile filtered" more or less interchangeably, and I have started to suspect these words are doing no work at all. I would like to…
Details up front: SWB · Shanghai ERP Biotechnology. I have used one of these for a while and I am considering switching, which requires a reason. What I care about is…
Numbers first: SWB · Flourishglobal Peptide Biotech. I want to know what the trade-off actually is rather than which option is fashionable. I would rather have a…
Numbers first: Medutest · dulaglutide. I can find plenty of assertions about this and almost no reasoning, which is usually a sign that nobody has checked. Assume no…
Numbers first: SWB · a quantified content assay. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the…
The particulars: method section · HJ. I have the document in front of me and I can read the numbers. What I cannot do is interpret them. I am reasonably comfortable…
Stated plainly: 97.6% · batch certificate. I have read the primary source rather than the summary, which has left me with more questions. I understand the headline. I…
What I am working with: lot-specific certificate · KP. I have read the primary source rather than the summary, which has left me with more questions. I understand the…
Details up front: 96.4% · purity figure. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone else’s…
For reference: 96.4% · a wide-pore C18 column · a GLP-1 receptor agonist. I want to understand what this actually establishes, as opposed to what it is being used to…
The particulars: 98.2% · PeptideMeter · 96.8%. Something has gone wrong and I would like to know how badly before I decide what to do. Nothing else in the setup…
For reference: 97.6% · a wide-pore C18 column · mazdutide. I want to understand what this actually establishes, as opposed to what it is being used to imply. My…
Concretely: survodutide · VendorInvestigate. The figures are clear enough; the question is what they mean and what they do not. I can supply the numbers if the…
The particulars: MKM · ecnoglutide. I would like to know whether this claim survives contact with evidence. If the answer is "nobody has tested that", I would like…
Setup, so nobody has to ask: FGP · identity confirmation by mass spectrometry. I have worked this out and I would like someone to find the error, because I suspect…
Details up front: Janoshik · Shanghai ERP Biotechnology. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at…
What I am working with: 98.8% · batch certificate. I have read the primary source rather than the summary, which has left me with more questions. I understand the…