Patent ID: 11869759
Assignee: SHIMADZU CORPORATION
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A mass spectrometer including a plurality of ion optical elements configured to transport ions or control a behavior of ions by an effect of an electric field formed by an applied voltage, the mass spectrometer comprising:
a) a controller configured to perform an analysis operation for a predetermined time for a predetermined sample, and configured to perform, on an operator selected target element, that is one ion optical element to be checked from the plurality of ion optical elements, an operation of eliminating charge-up of temporarily applying a direct-current voltage having a different polarity from a polarity of a direct-current voltage applied to the operator selected target element at a time when the analysis operation is performed;
b) a contaminant estimation unit configured to estimate a degree of contaminant of the operator selected target element on a basis of a change in ion intensity when the operation of eliminating charge-up is performed; and
c) a display processor configured to display a contaminant estimation result for the operator selected target element by the contaminant estimation unit.