u/naomi_antonsen
Contributes reviews on supplier material. Based in Bergen.
member · joined 15 Jun 2025
Comments — page 2 of 2
comment on method development — 10 things I got wrong before I got it right in c/hplc · 4 points · 1 year ago
a shoulder is not an impurity until you can resolve it
comment on [Question] thymosin — what am I missing here in c/researchpeptides · -16 points · 2 years ago
Purity methods differ by compound class. A gradient and wavelength developed for one peptide will not necessarily resolve the relevant impurities of another.
comment on [Question] how do you actually verify thymosin in c/researchpeptides · 45 points · 2 years ago
Careful — that is a claim about efficacy and there is essentially no human evidence behind it.
comment on personal import — 12 things I got wrong before I got it right in c/customs · 158 points · 2 years ago
I would not read a single clearance experience as a rule. Sample size one, and customs is not deterministic.
comment on [Lab] KP cagri — VendorInvestigate came back 98.1% against a claimed 97.5% in c/hplc · 72 points · 2 years ago
Resolution between two peaks depends on retention, selectivity and efficiency. A shallower gradient buys retention and usually resolution, at the cost of peak width and run time.