公开(公告)号：EP1171765B1

公开(公告)日：2005-08-24

申请号：EP00914358.7

申请日：2000-03-24

申请人： Infopia Co., Ltd.

发明人： Shin, Jae Ho ,  Lee, Sung Dong ,  Nam, Hakhyun ,  Cha, Geun Sig ,  Bae, Byeong Woo

IPC分类号： G01N27/333 ,  G01N27/416 ,  G01N27/30

CPC分类号： G01N27/301

摘要： The present invention relates to a reference electrode for a potentiometric electrode system, characterized in that the junction in contact with a sample solution is enlarged and an ion-sensitive membrane containing an ion selective material as a protective membrane for the inner reference solution is employed, which comprises a substrate; a metal layer; an insoluble metal salt layer; an insulating film for insulating the metal layer from an aqueous solution; a hydrogel serving as an inner reference solution; the junction on the hydrogel contacting with a sample solution; the ion-sensitive, protective membrane formed over all surface areas of the hydrogel, except for the junction, to separate the sample solution from the inner reference solution or act as an ion-sensing membrane upon the contamination of the junction, whereby the operational abnormality caused by junction contamination may be easily checked and fast activation may be achieved.

公开(公告)号：EP1171765A1

公开(公告)日：2002-01-16

申请号：EP00914358.7

申请日：2000-03-24

申请人： Infopia Co., Ltd.

发明人： Shin, Jae Ho ,  Lee, Sung Dong ,  Nam, Hakhyun ,  Cha, Geun Sig ,  Bae, Byeong Woo

IPC分类号： G01N27/333

CPC分类号： G01N27/301

摘要： The present invention relates to a reference electrode for a potentiometric electrode system, characterized in that the junction in contact with a sample solution is enlarged and an ion-sensitive membrane containing an ion selective material as a protective membrane for the inner reference solution is employed, which comprises a substrate; a metal layer; an insoluble metal salt layer; an insulating film for insulating the metal layer from an aqueous solution; a hydrogel serving as an inner reference solution; the junction on the hydrogel contacting with a sample solution; the ion-sensitive, protective membrane formed over all surface areas of the hydrogel, except for the junction, to separate the sample solution from the inner reference solution or act as an ion-sensing membrane upon the contamination of the junction, whereby the operational abnormality caused by junction contamination may be easily checked and fast activation may be achieved.