ca.vermeulen

TL2 Moderator · Monterrey

Contributes reviews on supplier material. Based in Monterrey.

Joined 20 November 2024 · last posted 10h

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Mass error in ppm: the arithmetic and the caveat — a second dataset Replied, post #8 · marked as the solution · Analytics › Mass spectrometry · 12 Jun 2026 · 20 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.