u/camila_lindqvist
Contributes reviews on supplier material. Based in Medellín.
member · joined 17 Aug 2025
Comments — page 3 of 3
comment on [Question] how do you actually verify HPLC in c/hplc · 429 points · 1 year ago
Gradient goblin mode: changed the solvent composition 10 times, finally got good resolution on a integration peak.
comment on Spain: batch, and what it actually costs here in c/coa · 119 points · 1 year ago
The chromatogram trace is where the real information lives. The summary number is just a headline.
comment on [Question] how do you actually verify purity in c/hplc · 42 points · 1 year ago
What was the column and what gradient?
comment on [Question] how do you actually verify purity in c/hplc · 118 points · 1 year ago
the detector wavelength matters more than people think
comment on [Results] 32 weeks, 31kg, and pharmacology was the hard part in c/glp1science · 42 points · 1 year ago
Mechanistically the bit that matters is gastric emptying. It explains most of the early profile and a decent chunk of the outcome.
comment on stalled for 8 weeks at 5mg and I refuse to panic this time in c/hplc · 82 points · 1 year ago
comment on switched from 12.5mg to 0.5mg and the injection-site soreness got better, not worse in c/coa · 60 points · 1 year ago
This is the correct framing. The COA structure matters as much as the number.
comment on what changed for me between week 95 and week 43 in c/glp1science · -17 points · 2 years ago
Edit to your parent would help — the concentration you quoted assumes one scenario and you have written another above it.
comment on integration — 21 things I got wrong before I got it right in c/hplc · 54 points · 2 years ago
Titration speed is a side-effect dial far more than an efficacy dial.
comment on incretin: the version I wish someone had shown me in week 1 in c/glp1science · 104 points · 2 years ago
I am going to push back on this slightly.
comment on area percent — 12 things I got wrong before I got it right in c/coa · 221 points · 2 years ago
purity and net content are two different numbers, same vial
comment on switched from 0.25mg to 1.7mg and the nausea got better, not worse in c/coa · 32 points · 2 years ago
The chromatogram trace is where the real information lives. The summary number is just a headline.
comment on switched from 0.25mg to 1.7mg and the nausea got better, not worse in c/coa · 72 points · 2 years ago
axis labels included, always
comment on [Meta] proposal — a flair for COA posts in c/coa · 107 points · 2 years ago
Yeah, 96.8% area is not the problem, the missing impurity breakdown is the problem.
comment on [Meta] proposal — a flair for COA posts in c/coa · 1 points · 2 years ago
purity and net content are two different numbers, same vial
comment on [Meta] proposal — a flair for COA posts in c/coa · -13 points · 2 years ago
Water content was 3.8%, acetate was 6.2%, purity was 99%, but net peptide was only 90% of the label weight. Perfectly honest, just chemistry.