Page 26 of 32 · 749 questions tagged coa.
Concretely: 97.6% · a C4 column · dulaglutide. I would like to know the limits of what can be inferred from this. What I am trying to avoid is over-reading a single…
Conditions: PeptideMeter · tirzepatide. I have done this once and I suspect I got away with it rather than got it right. For context: I keep records of every batch,…
The method section is present, which is unusual enough that I want to make use of it. I would like to know the limits of what can be inferred from this. What I am…
The case in front of me: survodutide · twelve weeks · minus 80 °C. I want to decide this in advance so that I am not deciding it under pressure later. Assume I will…
The case in front of me: ecnoglutide · twelve weeks · 25 °C. I want to decide this in advance so that I am not deciding it under pressure later. Assume I will follow…
The lot number on the vial matches the certificate, which at least rules out the easy problem. I have read the primary source rather than the summary, which has left…
The method section is present, which is unusual enough that I want to make use of it. I would like to know the limits of what can be inferred from this. What I am…
Stated plainly: dulaglutide · two weeks · 40 °C. I am trying to build something sustainable rather than something thorough that I will abandon. I have already decided…
What I am working with: WXT · GL Biochem (Shanghai). Both of these get recommended confidently by different people, which suggests neither is obviously right. My…
Conditions: CPC · liraglutide. The claim is plausible, which is exactly why I want to check it. I am able to read a paper if someone points me at one. Can anyone…
Conditions: a Karl Fischer water content test · tirzepatide. These are treated as interchangeable and I do not think they are. If both are acceptable I would like to…
Conditions: list of related substances · GGPeps. The figures are clear enough; the question is what they mean and what they do not. I can supply the numbers if the…
Setup, so nobody has to ask: dulaglutide · batch certificate. I would like help reading this properly rather than being told what conclusion to reach. I have the full…
The specifics, since they change the answer: tirzepatide · ten weeks · 2–8 °C. I would like to define my thresholds before I have a result, for obvious reasons. I…
I have both a purity figure and a content figure, which is why the discrepancy is visible. I can parse the result. I am less sure what it licenses me to conclude. I…
This is my second independent submission on material from the same supplier. I have the document in front of me and I can read the numbers. What I cannot do is…
For reference: 98.4% · PeptideMeter · 98.2%. Something has gone wrong and I would like to know how badly before I decide what to do. Nothing else in the setup…
Numbers first: 97.1% · a C8 column · tirzepatide. This is presented as though it settles something, and I am not convinced it does. I have two documents that appear…
The case in front of me: CPC · an HPLC purity test. I want the working, not the result — I need to be able to redo it with different numbers. I care about the…
For reference: SSA · an endotoxin test. I would like the arithmetic checked rather than the conclusion asserted. I have deliberately not used an online calculator…
What I am working with: Medutest · ChinaPeptides (QYAOBIO). I would like help reading this properly rather than being told what conclusion to reach. I have the full…
I have both a purity figure and a content figure, which is why the discrepancy is visible. This is presented as though it settles something, and I am not convinced it…
Concretely: semaglutide · twelve weeks · minus 80 °C. I want to decide this in advance so that I am not deciding it under pressure later. Assume I will follow the…
Numbers first: 98.2% · Janoshik · 97.9%. I have a result I cannot explain, and I would rather diagnose it than guess. I have checked the obvious explanations and…