| 摘要 |
PROBLEM TO BE SOLVED: To provide a filter membrane breakage detection apparatus surely detecting breakage of the membrane of a filter unit 1 without intermitting filtering operation at a low cost. SOLUTION: The filter unit 1 filtering raw water through the filter membrane is provided with a filter 5 visible from outside at a flow passage of filtered water T filtered from the raw water. COPYRIGHT: (C)2005,JPO&NCIPI
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