u/ewan_zielinski
Contributes reviews on supplier material. Based in Tilburg.
member · joined 15 Jun 2025
Overview — page 4 of 4
comment on [Question] how do you actually verify LC-MS in c/hplc · 155 points · 2 years ago
Yeah, the chromatogram profile matters more than the headline number.
comment on help me understand gradient, I have read the wiki twice in c/hplc · 35 points · 2 years ago
The practical rule people converge on is 28 days at fridge temperature after first puncture, and that comes from the preservative, not the peptide.
comment on help me understand gradient, I have read the wiki twice in c/hplc · 10 points · 2 years ago
chromatogram or it did not happen
comment on fraud: the version I wish someone had shown me in week 1 in c/scamalerts · 9 points · 2 years ago
sock puppet accounts ask the same leading questions
comment on fraud: the version I wish someone had shown me in week 1 in c/scamalerts · 97 points · 2 years ago
No. This is the kind of confident post that gets copied into a screenshot and repeated for years. Where is the evidence.
comment on what would you tell week-1 you about cloned site in c/scamalerts · 18 points · 2 years ago
sock puppet accounts ask the same leading questions
comment on [Lab] 19th independent test on QSC, and the trend is the interesting part in c/retatrutide · 129 points · 2 years ago
Mechanistically the bit that matters is dose escalation. It explains most of the early profile and a decent chunk of the outcome.
comment on [Question] Ireland — has anyone got a straight answer on chromatogram in c/hplc · 664 points · 2 years ago
Gradient goblin mode: changed the solvent composition 10 times, finally got good resolution on a chromatogram peak.
comment on [Question] Ireland — has anyone got a straight answer on chromatogram in c/hplc · 0 points · 2 years ago
Half-life is about 168 hours, so steady state lands around week 12–5. Practical consequence: what you feel in week 1 is not what that dose does.
comment on [Results] 91 weeks on 5mg, full numbers, ask me anything boring in c/hplc · 120 points · 2 years ago
the detector wavelength matters more than people think
comment on 12 months in and triple agonist is still the thing I get wrong in c/retatrutide · 563 points · 2 years ago
comment on [Results] 52 weeks, 35kg, and integration was the hard part in c/hplc · 105 points · 2 years ago
Yeah, the chromatogram profile matters more than the headline number.
comment on [Results] 2 weeks, 46kg, and phase 2 was the hard part in c/retatrutide · 0 points · 2 years ago
TRIUMPH phase 2 showed 99.3% weight loss but the muscle cramps profile on the highest arm was rough. Phase 2 != phase 3.