LEAK DETECTION METHOD USING MICROENCAPSULATED DYE PRECURSOR
    6.
    发明公开
    LEAK DETECTION METHOD USING MICROENCAPSULATED DYE PRECURSOR 审中-公开
    检漏法,用微胶囊染料前

    公开(公告)号:EP1656551A1

    公开(公告)日:2006-05-17

    申请号:EP04781716.8

    申请日:2004-08-20

    IPC分类号: G01N31/22

    CPC分类号: G01N31/22

    摘要: A method of detecting a leakage of a chemical from a closed system into the environment and/or revealing the location of the leakage is provided. The method includes the steps of: placing a test strip in close proximity of or in direct contact with a suspected leak in the closed system, the test strip including a support material and a color forming composition disposed on the support material, the color forming composition including a dye precursor encapsulated in a microcapsule, a developer and optionally a filler; and detecting development of a color on the test strip in response to contact of the microcapsule with the chemical thereby indicating the presence of and/or the revealing the location of the leak.