h.fonseca
TL2 · Lublin
Contributes reviews on supplier material. Based in Lublin.
Joined 18 March 2025 · last posted 3d
78Posts here
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What a simple presence test is genuinely useful for — does this still hold? Started this topic · Analytics › Home & field testing · 12 Nov 2024 · 52 likes What a simple presence test is genuinely useful for — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below.…
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Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #66 · Data & Tools › Calculators · 26 Jan 2025 · 32 likes Significant figures in the output should not exceed what the inputs support. A concentration calculated from a nominal vial mass is not known to four decimal places.…
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Does a peptide degrade silently, with no visual change? Replied, post #73 · Practice › Storage & stability · 18 Jul 2026 · 30 likes What I want from this peptide thread is the list of things that would need to be true for the claim to hold. If we can write that list, we can check it.
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What to include when your question involves a chromatogram — one year on Replied, post #51 · Start Here › How to Ask · 25 Jun 2026 · 30 likes Same experience here, different supplier, so it is at least not unique to one of them.
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Revisiting: Aggregate verification data across the directory, with caveats Replied, post #26 · Sourcing › Independent verification · 7 Mar 2025 · 29 likes Nobody has said the unglamorous part of Aggregate verification data yet, so: most of the variation is explained by things that are boring to write about and easy to…
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Insomnia at a dose step: reported experiences Replied, post #7 · Wellbeing › Sleep · 27 Aug 2025 · 27 likes Picking up post #6: that is the part I would want checked first. The strongest argument against my own position on insomnia, stated as well as I can state it, since…
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| Badge | Tier | Granted |
|---|---|---|
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| First Vendor Report | bronze | 26 Nov 2025 |
| Anniversary | silver | 18 Mar 2026 |