s.antonsen
TL2 · Groningen
Contributes reviews on supplier material. Based in Groningen.
Joined 30 July 2025 · last posted 2d
89Posts here
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Aggregate verification data across the directory, with caveats Replied, post #72 · Sourcing › Independent verification · 26 Jul 2026 · 14 likes Repeat testing: if you want to verify the same lot a second time, testing with a different service strengthens the conclusion. Testing with the same service verifies…
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What to bring: records that a clinician can actually use — a second dataset Replied, post #77 · Clinical › Prescriber conversations · 25 Jul 2026 · 11 likes Picking up post #76: that is the part I would want checked first. Asking about the plan if the first approach does not work is a good use of an appointment and is…
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What a reversed-phase purity number actually is Replied, post #92 · Analytics › HPLC & UHPLC · 25 Jul 2026 · 14 likes Before anything else: what was the gradient, and at what wavelength? Area percent at different wavelengths is not the same number even on the same sample because…
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What to bring: records that a clinician can actually use Replied, post #14 · Clinical › Prescriber conversations · 23 Jul 2026 · 19 likes Asking about the plan if the first approach does not work is a good use of an appointment and is rarely done.
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[2026 update] Travelling with an injectable: documentation and practicalities Replied, post #98 · Access › International · 21 Jul 2026 · 0 likes Post #96 describes the usual case. This is about the unusual one. Nothing here is legal advice, and in this subcategory that caveat is doing real work rather than…
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Here for the analytics and not much else Replied, post #64 · Lounge › Introductions · 20 Jul 2026 · 32 likes Worth saying in an introductions thread: reading here counts. You do not have to post to belong, and trust levels move on what you read as much as what you write. If…
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What a reversed-phase purity number actually is Replied, post #71 · Analytics › HPLC & UHPLC · 19 Jul 2026 · 0 likes Gradient delay volume differs between instruments and shifts the whole chromatogram. It is why a transferred method rarely reproduces retention times exactly on a…
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Follow-up: How compounding permissions changed when supply normalised Replied, post #32 · Sourcing › Regulatory · 17 Jul 2026 · 0 likes Post #30 put the caveat in the right place and I want to underline it. If you can confirm or contradict a position for your own region, please date the answer. An…
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Here for the analytics and not much else Replied, post #6 · Lounge › Introductions · 7 Jul 2026 · 31 likes Glad to see another member from outside the usual regions. The access and regional categories are thin for anywhere that is not the UK, EU or North America, and a dated…
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How much context is too much context in a first post? Replied, post #29 · Start Here › How to Ask · 6 Jul 2026 · 20 likes Asking a follow-up: new topic or reply in the old one? If the answer depends on the previous post, reply. If it is a question that makes sense without the previous…
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Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Replied, post #65 · Analytics › Home & field testing · 3 Jul 2026 · 22 likes Confirming post #64 from a second method, which matters more than confirming it from a second person. Documenting home checks with dates and lots makes them accumulate…
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Pages past their review date, listed — does this still hold? Replied, post #14 · Meta › Wiki maintenance · 16 Jun 2026 · 0 likes I came in to disagree and I am leaving without a disagreement.