Breath-condensate analyser

An analyser for collecting and analysing a breath condensate, the analyser comprising a housing, the housing having a cooling means and, further, retaining a cartridge device comprising a condensation zone to condense exhaled breath from a subject, the cooling means being in cooling relationship with the condensation zone, the cartridge including one or more further discrete regions for detection of an analyte and measurement of the analyte, the cartridge further comprising a fluid path connecting the condensation zone to the or each discrete region, the housing including a mouth-piece having an entry port to enable a user to breathe into the mouth-piece, the mouth-piece comprising one or more fluid passages to direct breath entering the mouth-piece into the condensation zone, the mouth-piece further comprising an exit valve, and a plurality of chambers interposed between the entry port and exit valve to direct fluid flow from the entry port to the exit valve, the chambers being so configured to cause a change of 90 in the direction of fluid flow, wherein at least two chambers are separated by a one-way valve.