Patent ID: 9170180
Filing Date: 2015-10-27
Classification: G01N

Abstract:
1. A particle number counting apparatus comprising: a saturator part including a flow path in which a working liquid is diffused in a vaporized state so as to render sample particles contained in a measurement targeted gas to flow in the flow path; a condenser part for introducing the sample particles and vaporized working liquid from the flow path and condensing the working liquid with the sample particles as cores so as to produce droplets of the working liquid; and a counter part for counting the droplets of the working liquid, wherein the saturator part includes a porous member in which the flow path is passed through to form an inlet at a lower side and an outlet at an upper side thereof so that the working liquid is supplied to a predetermined section of the porous member so as to be impregnated into the entire part of the porous member, and a housing having an accommodating space for accommodating the porous member, wherein a gap is formed between an outer peripheral surface of the porous member and an inner peripheral surface of the accommodating space of the housing, the gap providing an open space free of any material at least in an upper side opposite the predetermined section of the porous member to be supplied with the working liquid.