Rapid evaporative ionisation mass spectrometry ("reims") and desorption electrospray ionisation mass spectrometry ("desi-ms") analysis of swabs and biopsy samples

Apparatus comprising:

• one or more electrodes arranged and adapted to contact a sample on a swab which has been wetted with a first liquid so as to generate an aerosol, smoke or vapour;
• a device which is arranged and adapted to generate a plurality of analyte ions from said aerosol, smoke or vapour;
• and
• an analyser for analysing said analyte ions.