BREATH ANALYZING APPARATUS HAVING MEANS FOR EVAPORATING MOISTURE FROM BREATH CONDUIT

摘要

Apparatus for analyzing breath for ethyl alcohol having a breath conduit into which a subject expires in the collection of a sample of breath is provided with means for removing condensed moisture from the conduit. For this purpose, means is provided for supplying air to the conduit following the collection of a sample thereby effecting a flow of drying gas through the passage of the conduit. Advantageously, the air is supplied, after closure of a valve between the conduit and a sample chamber, by an air pump which also serves to expel the sample collected in the chamber to alcohol measuring means.