Breath Sampling Device and Method for Preparing a Sample From a Breath Sampling Device for Analysis

A breath sampling device comprising:

• an inlet through which a breath sample is received;
• an outlet through which the breath sample exits the breath sampling device;
• a fluid path between the inlet and outlet;
• a drying component which is positioned in the fluid path and which is configured to split the fluid path into first and second pathways, whereby, in use, a first portion of the breath sample passes through the first pathway and a second portion of the breath sample passes through the second pathway simultaneously;
• wherein the first pathway comprises drying material to dry the first portion of the breath sample;
• and
• wherein the second pathway is separated from the first pathway and the drying material so that the second portion of the breath sample passes through the second pathway without any drying;
• a mixer which is positioned in the fluid path downstream from the drying component and which is configured to recombine the first and second pathways into one fluid path, whereby the dried first portion of the breath sample and the second portion of the breath sample are mixed in the mixer to produce an output breath sample with lower humidity than the breath sample received in the inlet;
• and
• a sampler which is positioned in the fluid path downstream from the mixer and which is configured to collect a target compound from the output breath sample from the mixer.