i asked Janoshik for the raw trace and they sent it. that is the right answer to that question
[edited]#hplc-massspec 2025-07-13
Sunday13 messages4 participantstimes are UTC
Highlights from this day
- chaser_chris — two labs a point or two apart on the same lot is normal and gets mistaken for one of them being wrong constantly 04:19
- ghent_gradient — a dimer usually shows up late and at roughly double the mass. the chromatogram alone will not tell you 04:22
- ghent_gradient — coming back to this nobody runs enough blanks, including me 04:24
- chaser_chris — how do you tell co-elution from a clean single peak 07:47
two labs a point or two apart on the same lot is normal and gets mistaken for one of them being wrong constantly
if the lab reports area percent without stating the wavelength, the number is less useful than it looks
[edited]thats co-elution
a dimer usually shows up late and at roughly double the mass. the chromatogram alone will not tell you
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coming back to this nobody runs enough blanks, including me
vial-b-0329-front.png
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need more sample
follow up if somebody says they ran a mass spec and does not show you a spectrum, that is a claim, not a result
while im here is there any point running a blank if the sample is the question
i have a number at about a third of what i expected, is that a charge state
plus 16 is oxidation
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how do you tell co-elution from a clean single peak
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