Page 13 of 21 · 503 questions tagged hplc.
Concretely: 95.2% · liraglutide. Please show the division. I want to check my own against yours. I would like the general form as well as the specific number, so I…
Details up front: 98.8% · lot-specific certificate. This is presented as though it settles something, and I am not convinced it does. I have two documents that appear…
Concretely: oxidation · a C4 column. This is one of those things that everyone repeats and nobody derives. This matters practically, not just academically, because it…
Numbers first: 98.4% · a C8 column · tirzepatide. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone…
For reference: 96.8% · chromatogram. I want to understand what this actually establishes, as opposed to what it is being used to imply. My concern is that I am being…
I am comparing a supplier certificate against an independent result on the same lot. I want to know whether this is a real physical effect or an artefact of how it is…
The specifics, since they change the answer: fibrillation · ecnoglutide · minus 20 °C. I understand the observation; what I do not understand is the mechanism behind…
Setup, so nobody has to ask: 98.8% · cagrilintide. I have worked this out and I would like someone to find the error, because I suspect there is one. My working so…
What I have: 98.8% · dulaglutide. I can do the algebra. I am not confident about the conversion factors. If there is a standard way to lay this out, I would rather…
The case in front of me: oral semaglutide · PeptideMeter. I want to understand what this actually establishes, as opposed to what it is being used to imply. My…
The specifics, since they change the answer: deamidation · a wide-pore C18 column. I would like the mechanism, because I want to be able to reason about the cases…
What I am working with: aggregation · 30 °C. I keep seeing this stated as a fact with no explanation attached, and unexplained facts make me suspicious. My background…
For reference: 97.9% · 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…
Setup, so nobody has to ask: Janoshik · 98.2%. This is not behaving the way I expected and I want to understand the discrepancy before I act on it. I have…
What I am working with: orforglipron · 95.2%. I have worked this out and I would like someone to find the error, because I suspect there is one. My working so far,…
Setup, so nobody has to ask: 98.8% · a GLP-1 receptor agonist. I have worked this out and I would like someone to find the error, because I suspect there is one. My…
Conditions: 96.8% · a C4 column · retatrutide. 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: 99.1% · a GLP-1 receptor agonist. I have worked this out and I would like someone to find the error, because I suspect there is one. My…
Concretely: 97.6% · a C4 column · orforglipron. The figures are clear enough; the question is what they mean and what they do not. I can supply the numbers if the…
Details up front: a GLP-1 receptor agonist · a C8 column · semaglutide. I have used one of these for a while and I am considering switching, which requires a reason.…
The specifics, since they change the answer: fibrillation · 2–8 °C. I understand the observation; what I do not understand is the mechanism behind it. I have read the…
What I am working with: 98.2% · sampling plan. I would like help reading this properly rather than being told what conclusion to reach. I have the full report…
Setup, so nobody has to ask: orforglipron · a C18 column · survodutide. Both of these get recommended confidently by different people, which suggests neither is…
Setup, so nobody has to ask: aggregation · a GLP-1 receptor agonist · room temperature. I keep seeing this stated as a fact with no explanation attached, and…