| 摘要 |
PURPOSE:To collect a sample in a short time and to discriminate the size of a minute particle entering into the pure water by providing an outside vessel storing a vessel containing the pure water and introducing positively the air of objective space to be analyzed therein and providing a filter on an air intake port of the outside vessel. CONSTITUTION:The vessel 1 containing the pure water 2 is stored in the outside vessel 3. The top of this outside vessel 3 is open and the filter 4 is fitted thereto and besides, a discharge port 5 is provided to the side and a wind discharging means 6 such as the vacuum piping or a vacuum pump is connected with the discharge port 5. Here, the filter 4 to prevent from passing of a minute article over 0.3[mum] is used. The vessel 1 containing the pure water and the outside vessel 3 are constituted of 'Tefuron(R)' easy for cleaning respectively but glass or the like may be used for the material.
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