by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode

Full Title

Investigating or analysing materials by the use of electric, electrochemical, or magnetic means (G01N3/00 – G01N25/00 take precedence; measurement or testing of electric or magnetic variables or of electric or magnetic properties of materials G01R) > by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode

Child Classifications

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• G01N 27/622 Ion mobility spectrometry
• G01N 27/626 using heat to ionise a gas
• G01N 27/64 using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
• G01N 27/68 using electric discharge to ionise a gas