Page 7 of 35 · 833 questions tagged purity.
For reference: liraglutide · a wide-pore C18 column · tirzepatide. I am trying to choose between two options that are usually discussed as though only one exists. I…
What I have: racemisation · retatrutide · 40 °C. I can predict the outcome but I cannot explain it, which means I will get the next case wrong. I would like to know…
What I have: a GLP-1 receptor agonist · a C8 column · retatrutide. I want to know what the trade-off actually is rather than which option is fashionable. I would…
Details up front: 98.4% · Janoshik · 95.2%. I have a result I cannot explain, and I would rather diagnose it than guess. I have checked the obvious explanations and…
Conditions: semaglutide · 97.1%. I want the working, not the result — I need to be able to redo it with different numbers. I care about the precision as well as the…
Setup, so nobody has to ask: 96.8% · Medutest · 98.8%. This is not behaving the way I expected and I want to understand the discrepancy before I act on it. I have…
What I have: 98.2% · Janoshik · 96.8% · Medutest. I have used one of these for a while and I am considering switching, which requires a reason. What I care about is…
Setup, so nobody has to ask: a residual-solvent screen · cagrilintide. I suspect the honest answer is that it depends, in which case I would like to know on what.…
Stated plainly: 96.4% · a C18 column · ecnoglutide. I have read the primary source rather than the summary, which has left me with more questions. I understand the…
Stated plainly: 97.1% · cagrilintide. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked the order of magnitude and it…
Numbers first: 99.1% · orforglipron. 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: 99.1% · tirzepatide. I want the working, not the result — I need to be able to redo it with different numbers. I care about the precision as…
For reference: 97.6% · PeptideMeter · 95.2%. An unexpected observation, and I would like a differential rather than reassurance. The conditions were within what I…
The particulars: 98.8% · semaglutide. I would like the arithmetic checked rather than the conclusion asserted. I have deliberately not used an online calculator…
Stated plainly: 99.1% · Medutest · 96.4%. This is not behaving the way I expected and I want to understand the discrepancy before I act on it. I have photographed the…
The particulars: 97.1% · PeptideMeter · 99.4% · Medutest. I am trying to choose between two options that are usually discussed as though only one exists. I am not…
Numbers first: 99.4% · a C8 column · liraglutide. This is presented as though it settles something, and I am not convinced it does. I have two documents that appear…
Numbers first: 96.4% · dulaglutide · MKM. I would rather over-plan the first cycle and simplify later. I am prepared to do the work if someone can tell me which work…
Numbers first: 98.8% · 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…
Conditions: 99.4% · VendorInvestigate · 98.4%. I have two candidate explanations and no way to distinguish them. The same procedure has worked without incident…
Conditions: 96.8% · date of analysis. 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 result,…
The specifics, since they change the answer: dimerisation · cagrilintide · room temperature. I keep seeing this stated as a fact with no explanation attached, and…
Stated plainly: 99.4% · Medutest · 96.4%. I noticed this today and I have not touched anything since, in case the state is diagnostic. I have not discarded anything…
The case in front of me: ecnoglutide · a C4 column · survodutide. I would like the axes of comparison first and the recommendation second. I have tried the first…