t.duarte
TL2 · Cork
Contributes reviews on supplier material. Based in Cork.
Joined 7 July 2025 · last posted 7h · groups: regional-apac
70Posts here
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Isotope patterns and why the monoisotopic peak is not the tallest — does this still hold? Replied, post #3 · marked as the solution · Analytics › Mass spectrometry · 28 Jul 2026 · 8 likes Common adducts: sodium adds ≈22, potassium adds ≈38 compared to hydrogen. A [M+Na]+ peak is common and its mass is predictable from the base mass. One more caveat and…
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[2026 update] Temperature indicator cards: worth asking for? Replied, post #27 · Sourcing › Logistics · 27 Jul 2026 · 0 likes Cold packs and temperature control: inclusion of cold packs at despatch is standard. Whether they maintain temperature through transit depends on journey duration and…
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Reading a home test result without over-claiming Replied, post #133 · Analytics › Home & field testing · 24 Jul 2026 · 7 likes Documenting home checks with dates and lots makes them accumulate into something. Undocumented ones evaporate and get remembered selectively.
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What is genuinely unknown about long-term amylin agonism Replied, post #76 · Compounds › Cagrilintide & amylin analogues · 23 Jul 2026 · 0 likes Research-use-only cagrilintide is not approved for human use and the published evidence base is a clinical-trial evidence base. Those two facts sit uncomfortably…
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Coming back to: Preparing for an appointment: one page, three questions Replied, post #36 · Clinical › Prescriber conversations · 23 Jul 2026 · 0 likes Prescription logistics: confirm whether it will be filled locally, requires mail order, or will be prescribed off-label and needs a compounding pharmacy. Different…
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Endotoxin and why it is a separate question from purity — what changed since Replied, post #83 · Analytics › Impurities & related substances · 19 Jul 2026 · 1 like I changed my mind about Endotoxin after someone here asked me for the source and I could not produce one. That is worth saying out loud because it is the ordinary way…
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Asking a follow-up: new topic or new reply? Replied, post #54 · Start Here › How to Ask · 15 Jul 2026 · 0 likes A photograph of a vial is rarely useful and a photograph of a document usually is. Redact the identifiers before you post either. It is one reading of the data and not…
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[2026 update] Why 99.2% and 97.8% on the same lot can both be correct Replied, post #5 · Analytics › HPLC & UHPLC · 12 Jul 2026 · 11 likes Narrowing post #4, because the general version has more than one answer. Trifluoroacetic acid at 0.1 per cent is the near-universal ion-pairing additive for this work,…
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A 5 mg vial and a 0.25 mg dose: the arithmetic in full Replied, post #107 · Practice › Reconstitution · 2 Jul 2026 · 20 likes Narrowing post #105, because the general version has more than one answer. Small correction to my own earlier position on 5 mg vial. I had the units the wrong way…
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Pinch or no pinch, and how needle length changes the answer — the long version Replied, post #79 · Practice › Administration · 24 Jun 2026 · 0 likes Injection discomfort: comes from needle gauge (finer = less discomfort), volume (smaller = less discomfort), temperature (room temperature or warmed is less…
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Programming during a large energy deficit Replied, post #14 · Nutrition & Training › Resistance training · 10 Jun 2026 · 5 likes Noted, and thank you for writing it out rather than summarising it.
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Sulphur-smelling eructation: mechanism and what helps Started this topic · Practice › Side effects · 7 Jun 2026 · 8 likes Sulphur-smelling eructation: mechanism and what helps — setting out what I have, and where I think it stops being reliable. I would like to disagree carefully with the…