公开(公告)号：USH949H

公开(公告)日：1991-08-06

申请号：US321979

申请日：1989-03-10

申请人： Kimiko Ishizuka ,  Osamu Seshimoto

发明人： Kimiko Ishizuka ,  Osamu Seshimoto

IPC分类号： G01N27/28 ,  G01N27/30

CPC分类号： G01N27/307

摘要： A device for measuring the activity of carbonate ions and hydrogen ions comprises a carbonate ion selective electrode pair and a hydrogen ion selective electrode pair. Each ion selective electrode comprises a metal layer, metal halide layer and ion selective layer superposed in this order. A porous bridge is disposed so as to achieve a liquid junction between the ion selective electrodes of each electrode pair.

公开(公告)号：USH745H

公开(公告)日：1990-02-06

申请号：US169288

申请日：1988-03-17

申请人： Kimiko Ishizuka ,  Osamu Seshimoto

发明人： Kimiko Ishizuka ,  Osamu Seshimoto

IPC分类号： G01N27/28 ,  G01N27/333

CPC分类号： G01N27/3335

摘要： An ion-selective electrode for measuring carbonate concentration comprising a conductive metal layer, a halide of said conductive metal layer, a carbonate ion-selective layer containing ion carrier, and a buffer layer containing a hydrophilic polymer binder and a buffer laminated in this order on an electrically insulating support, and a pair of the above electrodes.It is characterized by not having the electrolyte layer containing hydrophilic polymer binder, having the possibility of degradation of the electrolyte layer by the absorption of moisture being extremely little, and having a good stability in the course of time. In the electrode of the invention, the ion-selective layer comprised of hydrophobic organic material is directly laminated on the metal halide layer, the adhesive strength between the metal halide layer and the ion-selective layer is sufficient, the strength of the ion-selective layer is sufficiently great, and which is stable. The electrode of the invention has a sufficient buffering ability, and it requires neither operation of preliminary measurement of the pH value of aqueous liquid sample nor fixation of the pH value by adding a pH buffer to sample. Moreover, the adverse affect (measuring error) by the interfering substance such as salicylate, p-aminosilicylate or gentisate is eliminated or remarkably reduced.

公开(公告)号：US5120506A

公开(公告)日：1992-06-09

申请号：US448443

申请日：1989-12-11

申请人： Yoshio Saito ,  Shinichi Matsuda ,  Keishiro Kido ,  Kimiko Ishizuka

发明人： Yoshio Saito ,  Shinichi Matsuda ,  Keishiro Kido ,  Kimiko Ishizuka

IPC分类号： G01N21/78 ,  B01L1/02 ,  G01N35/00 ,  G01N35/10

CPC分类号： B01L1/02 ,  G01N33/48764 ,  G01N35/00009 ,  G01N2035/00019 ,  G01N2035/00445 ,  G01N2035/00455 ,  G01N35/1083 ,  Y10T436/110833 ,  Y10T436/112499

摘要： A chemical analyzer has a cold-storage chamber and a tape-feeding cassette which can be accommodated in the cold-storage chamber and is detachable therefrom. The cassette contains a chemical analysis tape and has an opening through which the tape can be taken out of the cassette. A section of the tape-feeding cassette inside of the opening is sealed off from the atmosphere and from other parts of the cassette. The tape passes through this section. This section is provided with air which has a relative humidity not higher than 70% such that the pressure therein is positive.

摘要翻译： 化学分析仪具有冷藏室和送带盒，该盒可以容纳在冷藏室中并可从其中拆卸。 盒式磁带包含化学分析胶带，并具有一个开口，磁带可以通过该开口从盒中取出。 开口内部的送带盒的一部分与大气和盒的其他部分密封。 磁带通过本节。 该部分具有相对湿度不高于70％的空气，使得其中的压力为正。