Tools

RGA Abacus

Three ways into the abacus: by species, by mass number, or by fingerprint.

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CLICK A MASS TO SEE ALL CONTRIBUTING SPECIES

Select a mass

Click any mass number above to see which species contribute to that peak.
SELECT OBSERVED MASSES THEN VIEW MATCHED CONTAMINANTS & SPECIES
0 masses selected
Select masses above to identify possible contaminants and species.
Sources · 7
  1. [A]NIST Chemistry WebBook, Mass Spectra (70 eV electron impact).
  2. [A]NIST Electron-Impact Cross Section Database.
  3. [B]MKS Instruments, MicroVision 2 Residual Gas Analyzer : Operating Manual, 2019.
  4. [B]Solvay, Fomblin PFPE product documentation (M69 / M119 / M169 triplet).
  5. [B]DuPont / Chemours, Viton and Kalrez guides (thermal decomposition, M100 marker).
  6. [B]Dow Corning / Shin-Etsu, PDMS data (M73 / M147 / M207 triplet, silicone migration).
  7. [B]Gamma Vacuum / Agilent, Ion Pump manuals (noble-gas pumping, cathode sputtering).

Rated [A] primary standard data, [B] manufacturer documentation. 70 eV cracking patterns are nominal and vary 10-20% between instruments : validate against a known calibration gas before quantitative use.