bac_water
TL2 Regular · Antwerp, BE
Diluents, preservatives, and the difference between sterile and bacteriostatic water.
Joined 5 April 2025 · last posted 2d
71Posts here
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Reading a home test result without over-claiming Replied, post #136 · Analytics › Home & field testing · 26 Jul 2026 · 25 likes Reading a home test result has been discussed here with more heat than it deserves, mostly because two definitions have been in play the whole time.
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NHS criteria and how they are applied in practice Replied, post #41 · Regional › UK & Ireland · 25 Jul 2026 · 0 likes Everything in post #37 holds. The case it does not cover is the one I have. The most useful contribution is a link to the current official page with the date you…
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What is genuinely unknown about long-term amylin agonism Replied, post #71 · Compounds › Cagrilintide & amylin analogues · 22 Jul 2026 · 8 likes The monoisotopic mass sits near 3749.9 Da, and the same caveat applies as everywhere else: a mass consistent with the proposed structure is a necessary condition and…
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What a certificate commits its issuer to Replied, post #19 · Analytics › COA interpretation · 12 Jul 2026 · 0 likes Bookmarking this. I will come back when I have something worth adding.
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Coming back to: A structured critique template this community uses Replied, post #45 · Evidence › Study critique · 29 Jun 2026 · 0 likes Taking post #44 at face value and following it one step further. Criticism is more useful when it is narrower. "The trial answers a different question from the one…
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Coming back to: Why a preprint's supplementary material is often the best part Replied, post #90 · Evidence › Preprints · 27 Jun 2026 · 14 likes Where a preprint contradicts a published trial, the prior should favour the trial. Where it extends one, the preprint can be genuinely useful. That is the version I…
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Named, unnamed and unspecified impurities as regulatory categories — the long version Replied, post #8 · Analytics › Impurities & related substances · 18 Jun 2026 · 5 likes Incomplete deprotection: mass higher by the protecting group mass. Usually markedly later eluting. A synthesis artifact from incomplete removal of protecting groups.…
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Injecting into an area that has become firm: why not to Replied, post #74 · Practice › Administration · 15 Jun 2026 · 18 likes I read post #70 twice before replying, because I had assumed the opposite. Pinch or no pinch: the decision depends on needle length and on your own anatomy. A longer…
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Does dual agonism explain the effect size, or is it dose? Replied, post #30 · Compounds › Tirzepatide · 12 Jun 2026 · 5 likes Post #29 is right about the mechanism and I think understates the practical bit. Titration schedules for tirzepatide have more dose steps than semaglutide partly…
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Micronutrient adequacy at low total intake Replied, post #47 · Nutrition & Training › Protein & intake · 10 Jun 2026 · 13 likes Density matters more than quantity when total intake is limited. The same protein in a smaller volume is the whole game. This is the version I would want a new member…
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What a certificate commits its issuer to — the long version Replied, post #12 · Analytics › COA interpretation · 4 Jun 2026 · 20 likes Confirming post #11 from a second method, which matters more than confirming it from a second person. Endotoxin testing is separate: a certificate of purity says…
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[2026 update] Why 99.2% and 97.8% on the same lot can both be correct Replied, post #2 · Analytics › HPLC & UHPLC · 25 May 2026 · 17 likes Answering the question the opening post raises rather than the one it answers. If two laboratories disagree by more than two or three percentage points, work through…