Page 29 of 35 · 833 questions tagged purity.
What I am working with: 96.4% · Medutest · 97.6% · Janoshik. I suspect the honest answer is that it depends, in which case I would like to know on what. Assume I can…
Setup, so nobody has to ask: +3 · 3751.0 Da. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked the order of magnitude…
Stated plainly: aggregation · mazdutide · 25 °C. The empirical answer seems settled. The explanation does not. If the honest answer is that nobody knows, I would…
Conditions: GL Biochem · semaglutide. 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…
What I have: 98.2% · orforglipron · SSA. This is a planning question. I know what my options are; I do not know how to weigh them. What I want is the minimum viable…
What I am working with: 98.4% · cagrilintide. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked the order of magnitude…
Setup, so nobody has to ask: a Karl Fischer water content test · tirzepatide. These are treated as interchangeable and I do not think they are. If both are acceptable…
Details up front: 96.4% · Janoshik · 95.2% · Medutest. I have used one of these for a while and I am considering switching, which requires a reason. What I care about…
The particulars: 96.4% · semaglutide · KP. I am at the decision point and I would rather think it through than improvise. I would rather spend money on measurement…
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…
Concretely: semaglutide · a C4 column · cagrilintide. I would like the axes of comparison first and the recommendation second. I have tried the first option and it…
Numbers first: +2 · 3751.0 Da. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the method is what I…
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: oxidation · tirzepatide · minus 20 °C. I want to know whether this is a real physical effect or an artefact of how it is measured. What…
The method section is present, which is unusual enough that I want to make use of it. I want the working, not the result — I need to be able to redo it with different…
The case in front of me: PeptideMeter · 99.4%. I have two candidate explanations and no way to distinguish them. The same procedure has worked without incident…
Numbers first: 97.6% · orforglipron · GL Biochem. This is a planning question. I know what my options are; I do not know how to weigh them. What I want is the minimum…
For reference: 99.1% · survodutide. I would rather understand the derivation than memorise the outcome. Two people I asked gave two answers that differ by a factor of…
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…
What I am working with: 98.4% · a C18 column · ecnoglutide. I would like help reading this properly rather than being told what conclusion to reach. I have the full…
The case in front of me: 97.1% · VendorInvestigate · 98.4%. I have two candidate explanations and no way to distinguish them. The same procedure has worked without…
Concretely: 98.2% · VendorInvestigate · 99.4% · Janoshik. These are treated as interchangeable and I do not think they are. If both are acceptable I would like to…
Stated plainly: 96.4% · a GLP-1 receptor agonist · HJ. I would like to set this up properly once, rather than adjust it repeatedly. My budget is real but not tight,…