Patent ID: 8072598

Claim:
A condensation particle counter, comprising: a saturator for generating a saturated gas by saturating a gas with working fluid, the gas including suspended fine particles; a plurality of condensers for condensing the saturated gas to form liquid droplets around the fine particles, the plurality of condensers being connected to a downstream side of the saturator; a plurality of optical particle counters for optically detecting the liquid droplets supplied from the plurality of condensers, the plurality of optical particle counters being connected to downstream sides of the condensers; a plurality of condenser tubes included in the plurality of condensers, the plurality of condenser tubes interconnecting the saturator and each of the plurality of optical particle counters; a hydrophilic layer being in contact with the inner surface of each of the plurality of condenser tubes; and a plurality of cooling means for reducing temperatures of the plurality of condenser tubes, the plurality of cooling means surrounding the outer surfaces of the plurality of condenser tubes.