Abstract: An ion selective electrode comprising a support having provided thereon, in sequence, a conductive layer and an ion selective layer, which is characterized by having at least one groove through the conductive layer and covering the surface of the groove with the ion selective layer is disclosed. Half cells or electrodes useful for the measurement of ionic activity of chlorine, sodium, potassium or, carbonate or hydrogen carbonate ions in blood or other aqueous sample liquids can be prepared in an extremely simple manner. The single ion selective electrode element comprising paired ion selective electrodes in accordance with the present invention are electrochemically equivalent. A process for forming the same is also disclosed.

Abstract: An ionic activity measuring device comprising a substrate provided with at least one opening for receiving a terminal made of a metal layer or a metal layer and a water insoluble metal salt layer, an ion selecting layer positioned on or in the substrate, and at least one liquid receiving hole for bringing liquid into contact with the ion selecting layer at the point vertically aligning with the opening in the substrate. The liquid receiving hole is formed in a porous bridge positioned on the ion selecting layer or on a bridge supporting material which is discrete from the ion selecting layer, or is formed in the substrate. The substrate may be a flexible film, and the device may further comprise a film feeding housing provided with a shaft for feeding the film and a film receiving housing provided with a wind-up shaft.

Abstract: A device for transporting and distributing a liquid comprising at least one internal liquid passage, a liquid introducing hole extending from the outer surface of the device to the liquid passage, and at least one liquid distribution opening extending from the liquid passage to the outer surface. The inlet of the liquid introducing hole is adapted to receive a port of a liquid injector in airtight relation therewith. At least one air discharging hole may extend from the liquid passage to the outer surface. An ionic activity measuring device is constructed by a combination of such devices. It comprises solid electrodes in contact with the liquid distribution openings and provided in a number equal to the number thereof, and at least one bridge extending between the liquid introducing holes, between the liquid passages or between the liquid distribution openings. The respective pairs of solid electrodes are able to selectively respond to a predetermined ion.

Abstract: A thermal recording element comprising a support having formed thereon a recording layer, a first protective layer comprising an organic high molecular weight material having a softening point below about 70.degree. C. formed on the recording layer, and a second protective layer comprising an organic high molecular weight material having high mechanical strength.

Abstract: A device for determining ionic activity composed of, as essential components, plural pairs of ion-selective solid electrodes each pair having two electrodes (one electrode on each of two sides) and each pair having a different ion-selective layer; two liquid distribution porous members, each member disposed over all the electrodes of each said side of the plural pairs; and a porous capillary bridge disposed on or between the liquid distribution porous members. The bridge can be in liquid contact with all the electrodes through the liquid distribution porous members and achieve electrical conduction between two electrodes in each pair after spotting a test solution and a reference solution. The device preferably further comprises a support frame and a cover having two apertures for liquid spotting. The device can simultaneously determine ionic activities of a plurality of different ions in a test solution, such as whole blood, plasma, serum, urine, etc.

Abstract: A process for forming an electrically conductive film by exposing to actinic radiation a coating that contains a nonionic electron donating compound and a halogen-substituted polymer having film-forming properties on a substrate, thereby forming a charge transfer complex in said halogen-substituted polymer in said coating.

Abstract: A thermal recording material possessing high sensitivity which comprises a support having thereon in sequence a subbing layer, a recording layer and optionally, a protecting layer in which the subbing layer contains a composition comprising (A) 100 parts by weight of chlorinated polyolefin having a chlorine content of about 30% by weight or more and (B) 1 part to 100 parts by weight of aminoalkylalkoxysilane compound represented by the following general formula (I): ##STR1## wherein R.sup.1 represents an amino group or a H.sub.2 N--R.sup.5 --NH-- group; R.sup.2 and R.sup.5 each represents a polymethylene group having 1 to 2 carbon atoms or a straight or branched chain alkylene (alkanediyl) group having 3 to 5 carbon atoms, and may be the same or different; R.sup.3 represents a straight or branched chain alkyl group having 1 to 5 carbon atoms; m represents 2 or 3; R.sup.4 represents a straight or branched chain alkyl group having 1 to 5 carbon atoms or an R.sup.1 --R.sup.