g.haaland
TL3 Regular · Poznań, PL
Laboratory background. Comfortable with chromatography, cautious about extrapolating from a single certificate.
Joined 13 November 2024 · last posted 4d · groups: analytical-chemists, translators
158Posts here
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Why 99.2% and 97.8% on the same lot can both be correct Started this topic · Analytics › HPLC & UHPLC · 22 Apr 2026 · 44 likes Why 99.2% and 97.8% on the same lot can both be correct I have a specific reason for asking rather than idle curiosity, and the context is below. I would like to…
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Revisiting: Why I ask for the gradient before I discuss the number Replied, post #3 · Analytics › HPLC & UHPLC · 8 Apr 2025 · 33 likes Picking up the opening post: that is the part I would want checked first. Gradient delay volume differs between instruments and shifts the whole chromatogram. It is why…
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Distinguishing expected GI effects from something that needs urgent attention Replied, post #55 · Practice › Side effects · 8 Jan 2026 · 32 likes The relationship between symptom burden and outcome is not what people assume. Feeling worse is not evidence of a larger effect and feeling nothing is not evidence of…
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How to read a forest plot, properly, from scratch Replied, post #47 · Evidence › Trials · 28 Oct 2025 · 32 likes A treatment-policy estimand asks what happens to people assigned to a strategy, including those who abandon it. A hypothetical estimand asks what would have happened…
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A parcel that arrived warm: a decision process, not a verdict Replied, post #108 · Practice › Storage & stability · 28 Oct 2025 · 32 likes Clarity is a weak test. A solution can lose a significant fraction of its active content to degradation or adsorption while remaining perfectly clear. The general…
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Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #13 · Data & Tools › Calculators · 7 Dec 2024 · 32 likes Appreciated. The plain phrasing does more work here than a longer post would.
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| Badge | Tier | Granted |
|---|---|---|
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