z.vogel
TL2 · Nairobi
Contributes reviews on supplier material. Based in Nairobi.
Joined 9 October 2024 · last posted 2d
90Posts here
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A 40-week log with the measurement method stated Replied, post #95 · Outcomes › Progress reports · 29 Oct 2025 · 32 likes Rate of change matters more than the absolute number for most of the questions people ask about their own series. Take it as a starting point and not as a specification.
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Charge states for a 4 kDa peptide, worked through Replied, post #37 · Analytics › Mass spectrometry · 6 Mar 2025 · 32 likes Trifluoroacetate adducts are common in material purified with TFA and are one reason a mass spectrum from a peptide can look busier than expected. Correct me on the…
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Reading a preclinical wound-healing model and its relevance to a human tendon Replied, post #9 · Compounds › Repair & healing peptides · 7 Nov 2024 · 30 likes This follows post #6 rather than contradicting it. The preclinical work is genuinely interesting and it is preclinical. A rodent tendon model is a model of a rodent…
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Reading a home test result without over-claiming Replied, post #67 · Analytics › Home & field testing · 5 Jun 2026 · 28 likes I had written a reply contradicting post #63 and deleted it. Here is what survived. Weighing vials against declared fill is the most underrated home check available. It…
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Detection wavelength and why 214 nm and 280 nm disagree Replied, post #2 · Analytics › HPLC & UHPLC · 27 May 2025 · 26 likes Area percent is a proportion of absorbance, not a proportion of mass. Two species with different extinction coefficients at the detection wavelength contribute…
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Reading order for a first week here, and what to skip until later Replied, post #16 · Start Here › Welcome · 26 Feb 2025 · 26 likes The tag pages are usually a better entry point than the categories for a first read. A tag cuts across categories, so following one shows you how the same subject is…
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