peak at 4.2 min, nobody can tell me what it is, ideas
chromatogram. That is the whole post, but I will justify it. Everything else people worry about in c/dosinglogs is downstream of it. Titration speed, muscle cramps, the endless dose arguments — most of it resolves if you sort chromatogram out first, and almost nobody does. I say this having got it wrong for 21…
Dead space in the needle hub holds a small but non-trivial volume. On low-volume draws that can be several units.
This is the correct method framing. Column and gradient are load-bearing fields.
Injection volume and flow rate? Those affect resolution.
Yeah, the chromatogram profile matters more than the headline number.
instrument quality is less important than analyst consistency
integration decision on a shoulder changes your number by half a point on its own
Did they post the raw trace or just the summary?
Did they post the raw trace or just the summary?
Yes, exactly this, and it is the bit that took me 93 weeks to accept.