j_wierzbicki
Statistics background. I read confidence intervals before headlines.
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Top answers
118Two labs reported 98.1% and 99.4% on the same vial. Which one is wrong?accepted · answered 27 Nov 2025105How do I reconcile 96.4% from PeptideMeter with 98.8% from the supplier?accepted · answered 17 Jun 2024104What would you ask GL Biochem (Shanghai) before a first order that they cannot fake?answered 27 Jun 2024102How do I reconcile 99.4% from PeptideMeter with 97.1% from the supplier?accepted · answered 22 Dec 2024100My ecnoglutide vial sat at 2–8 °C for five days — is testing worth it before use?accepted · answered 18 Jan 202596What does a purity figure on an SWB report change about how I read it?answered 2 Sept 202494How do I trace an MKM lot number back to a synthesis date?answered 19 Mar 202592What does a chromatogram on a GGPeps report change about how I read it?accepted · answered 26 Apr 2026
Top questions
34Why does aspartimide formation accelerate at 40 °C rather than proceeding linearly?4 answers, accepted · asked 9 May 202432What does SURMOUNT-2 tell me about nausea at the 10 mg dose?0 answers · asked 9 Oct 202430How long does a Hangzhou to South Africa lane usually take with tracking?5 answers, accepted · asked 8 Nov 202430What does 98.8% purity on a C8 column actually tell me about a tirzepatide vial?0 answers · asked 10 Jun 202529Would you accept 98.8% on orforglipron from GL Biochem without a content assay?5 answers, accepted · asked 7 Dec 202528How many vials from an SSA lot should I send for a residual-solvent screen?5 answers, accepted · asked 22 Jul 202528Is there any published stability data for liraglutide at 40 °C?0 answers · asked 3 Oct 202427Why would PeptideMeter report 97.6% where the supplier certificate says something higher?0 answers · asked 26 Sept 2024