发明授权
- 专利标题： LOW OXYGEN TRANSMISSION IMAGING SYSTEM
- 专利标题（中）： 低氧传输系统指示
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申请号： EP94903506.7申请日： 1993-12-07
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公开(公告)号： EP0673507B1公开(公告)日： 1997-06-18
- 发明人: BULL, Christopher , BARMORE, Charles, Rice
- 申请人： W.R. Grace & Co.-Conn.
- 申请人地址： 1114 Avenue of the Americas New York New York 10036 US
- 专利权人： W.R. Grace & Co.-Conn.
- 当前专利权人： W.R. Grace & Co.-Conn.
- 当前专利权人地址： 1114 Avenue of the Americas New York New York 10036 US
- 代理机构： Senior, Alan Murray
- 优先权： US988511 19921210
- 国际公布： WO9414059 19940623
- 主分类号： G01N31/22
- IPC分类号： G01N31/22 ; G01N15/08 ; G01N21/78
摘要：
A method of detecting the permeability of an article to oxygen is disclosed. A fluorescent redox indicator, preferably riboflavin, is dispersed in a carrier and placed on an impermeable substrate. The article to be measured is placed adjacent to the carrier. Residual oxygen is removed, the redox indicator is photoreduced, the article and carrier are exposed to oxygen, and the indicator is exposed to UV light.
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