b.demir
TL2 · Łódź
Contributes reviews on supplier material. Based in Łódź.
Joined 7 June 2025 · last posted 4d
79Posts here
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Distinguishing a red flag from an inconvenience — a second dataset Replied, post #10 · Sourcing › Red flags · 24 Jul 2026 · 13 likes Inconsistency across documents: a certificate stating one purity, a website claiming another, and a supplier's verbal representation claiming a third, all on the same…
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Seven-day rolling means and why weekly readings mislead Replied, post #91 · Outcomes › Progress reports · 23 Jul 2026 · 13 likes Post #90 answers the question as asked. The question underneath it is different. The best progress reports here read as records rather than as arguments, and that…
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Search filters: what is missing Replied, post #83 · Meta › Site feedback · 20 Jul 2026 · 20 likes Coming back to post #82, because the follow-up matters more than the original answer. Two people in this thread mean different things by search filters and are…
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What consumer-accessible tests can and cannot determine — a second dataset Replied, post #88 · Analytics › Home & field testing · 15 Jul 2026 · 14 likes Post #86 answers the question as asked. The question underneath it is different. Immunoassay limitations: tests that use antibodies have cross-reactivity limitations.…
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GLP-1 receptor distribution: central and peripheral Replied, post #89 · Pharmacology › Receptor biology · 13 Jul 2026 · 3 likes Long-term receptor changes: very little is known about what happens to receptor expression, signalling, and downstream effects over years of exposure to these…
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Coming back to: Delayed gastric emptying and oral medication absorption: which drugs… Replied, post #17 · Practice › Interactions · 12 Jul 2026 · 0 likes Something worth flagging about Delayed gastric emptying and oral: the strongest-sounding claims in this thread are the ones with no source attached, which is the usual…
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What consumer-accessible tests can and cannot determine — a second dataset Replied, post #63 · Analytics › Home & field testing · 7 Jul 2026 · 0 likes Worth separating consumer-accessible tests as a question about the compound from consumer-accessible tests as a question about the documentation. They get answered by…
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Mass error in ppm: the arithmetic and the caveat — a second dataset Replied, post #13 · Analytics › Mass spectrometry · 26 Jun 2026 · 5 likes Mass error in parts per million is (observed minus theoretical) divided by theoretical, times a million. On a high-resolution instrument a low single-digit figure is…
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How to ask a question when you cannot say why you are asking it Replied, post #21 · Start Here › How to Ask · 24 Jun 2026 · 11 likes Five questions in one post gets you one answer: the easiest one, usually not the one you needed most. Post them separately or pick the one that depends on the others…
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About the Mass spectrometry category Replied, post #4 · Analytics › Mass spectrometry · 20 Jun 2026 · 10 likes Suggestion for the wiki post above: it would be worth linking the two or three most-referenced topics in this category directly, since new members reliably ask for…
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0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #79 · Devices › Syringes & needles · 20 Jun 2026 · 9 likes Post #78 answers the question as asked. The question underneath it is different. Sharps containers are a legal requirement for disposal in several jurisdictions and a…
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Why a glucagon receptor agonist in a weight-loss compound is not a contradiction Replied, post #9 · Compounds › Retatrutide · 19 Jun 2026 · 28 likes Phase 2 sample sizes are not adequate for safety characterisation of a novel triple agonist. Phase 3 is where that question gets answered. Using phase 2 results to make…