Mass accuracy
Difference between measured and theoretical mass, in ppm of the theoretical value. A relative measure — the same ppm is a different absolute error at different masses.
Related terms
- ppm
- Parts per million. Used for mass accuracy: ppm = (observed − theoretical)/theoretical × 10⁶.
- Rule AX-R01
- Mass accuracy outside the class limit. Records identity as not established rather than failed, because most instances are calibration problems.
see also Mass accuracy
see also Mass accuracy
Where this term appears
The glossary exists to make record pages readable without a chemistry degree. Every technical term on a report resolves here.
- Assay report records — the term appears in result tables, peak tables and provenance blocks
- Method references — where the measurement behind the term is defined
- All 16 glossary terms beginning with M