Abstract: Disclosed herein is a dispensing device capable of reducing the dead volume of a liquid sample. The dispensing device includes a main channel (3) whose one end is connected to a sample inlet (13) and whose other end is connected to a sample outlet (15), and a plurality of branch channels (5) connected to the main channel (3). The branch channels (5) are each connected to different liquid reservoirs (7) at their ends located on the opposite side from the main channel (3). A plurality of high inflow-withstanding pressure sections (17) having a higher inflow-withstanding pressure than the branch channel (5) are provided in the main channel (3) between the branch channels (5) and (5) and between the branch channel (5) and the sample outlet (15). Each of the high inflow-withstanding pressure sections (17) has a channel inner wall which forms a contact angle of 90° or larger with a liquid sample.

Abstract: Disclosed herein is a reactor plate which prevents the entry of foreign matter from the outside and the pollution of a surrounding environment. A reactor plate (1) includes a reaction well (5), a reaction well channel connected to the reaction well (5), and reaction well air vent channels (19) and (21) connected to the reaction well (5). The reaction well channel has a main channel (13), a metering channel (15) branched off the main channel (13), and an injection channel (17) of which one end is connected to the metering channel (15) and the other end is connected to the reaction well (5). The main channel (13) and the reaction well air vent channel (21) can be hermetically sealed.

Abstract: Micro droplets are accurately placed in a reaction well. The reaction well (5) is formed in one surface of a well base (3). A channel base (11) is placed on the well base (3). The channel base (11) has, in its surface joined to the well base (3), a liquid introduction channel (12a) and a reaction well air vent channel (18a). The channel base (11) also has a recess (27) formed opposite to the reaction well (5) and recessed upward from the upper surface of the liquid introduction channel (12a). When viewed from above, a shoulder part (26) of the recess (27) is placed near the connection part between the reaction well (5) and the liquid introduction channel (12a) and is closer to the center of the reaction well (5) than a shoulder part (16) of the reaction well (5).

Abstract: A sample vaporization unit that attains enhancing of reproducibility through fixing of the sample vaporization unit. Sample vaporization unit (4) at its one end is connected to the distal end of glass insert (2) and at its other end is connected via glass tube (5) to one end of capillary column (6). The other end of the capillary column (6) is led to detector (8). The sample vaporization unit (4) is comprised of base frame (22), flow channel (24) provided in the base frame (22), and rugged portion (26) for sample vaporization provided by microfabrication within the flow channel (24). Any liquid sample flowing through the flow channel (24) is vaporized by feeding of energy to the rugged portion (26), and the vapor is subjected to separation by means of the column (6) and detection by means of the detector (8).

Abstract: To provide a flow cell that is free from liquid leakage and excels in chemical resistance. There is provided a preferred form of flow cell comprising flat-plate glass substrate (3); adherent fluororesin sheet (5) having a groove as flow channel (7) made by cutting machining; and glass substrate (1) as lid member furnished with through-holes (9, 11) as fluid inlet and outlet at positions corresponding to both end portions of the groove. The fluororesin sheet (5) is interposed between the glass substrates (1, 3) and, while heating at a temperature not lower than the melting point of the fluororesin sheet (5), pressurized so that the glass substrates (1, 3) are bonded together by the fluororesin sheet (5) per se. Flow channel member (17) is constructed by the glass substrate (3) and, bonded thereonto, the fluororesin sheet (5).

Abstract: Disclosed is a total organic carbon (TOC) measurement apparatus capable of facilitating reduction in size of the apparatus and achieving enhanced measurement accuracy. The TOC measurement apparatus includes an organics oxidation unit, a carbon-dioxide separation unit and a conductivity measurement unit, which are integrally formed by laminating a plurality of plates to define therebetween and incorporate therein an oxidizing flow passage, an aqueous-sample flow passage, a gas permeable membrane, a measurement-water flow passage and a conductivity measuring electrode. The TOC measurement apparatus is designed such that carbon oxide in an aqueous sample is transferred from the aqueous-sample flow passage to the measurement-water flow passage through the gas permeable membrane, and a conductivity of measurement water which contains the carbon oxide and flows through a flow passage facing the conductivity measuring electrode is determined and converted to a TOC content.

Abstract: A gas exchange chip comprises substrates (1,2); two flow channels (3,4) formed in the substrates (1,2) and each having an inlet port and an outlet port; and multiple grooves (9) interlinking the flow channels (3,4). The grooves (9) have the size of their sectional area predetermined and have at least a part of the internal surface thereof rendered hydrophobic so as to permit the transfer of gas component while inhibiting any liquid passage. A sample water containing carbon dioxide is caused to flow through one of the flow channels (3) while pure water is caused to flow through the other flow channel (4) to thereby transfer the carbon dioxide contained in the sample water into the pure water.

Abstract: An inorganic board consisting of an inorganic base layer formed by a paper making method and an inorganic surface layer formed by the dry method on said inorganic base layer is provided in the present invention. A synthetic resin emulsion and/or a rubber latex is coated on and permeates said inorganic base layer so as to supply the water to said inorganic surface layer and improve the delamination strength between said inorganic base layer and said inorganic surface layer.

Abstract: An inorganic board consisting of a cured base mat and a cured surface mat is manufactured by forming a surface mat by the dry method on a base mat formed by a paper making method, embossing the composite mat, and curing the embossed composite mat. Ridges each having an enlarged top are formed on the surface of the base mat when a plural number of single mats formed by the paper making method are rolled and laminated around a making roll having a surface on which a plural number of ring grooves are formed. The ridges of the base mat engage the surface mat since each ridge has an enlarged top to improve the interlaminate strength between a cured base mat and a cured surface mat of the resulting inorganic board.

Abstract: An embossing apparatus for inorganic board and the method of embossing thereby are provided in the present invention. In the present invention, an uncured mat of inorganic board set on a lower fixed plate is embossed by a flexible mold plate of a upper movable plate wherein the surface of said flexible mold plate divided into a plural number of square patterns enclosed by ridges and said flexible mold plate is bent downward and convexly such that the ridge lines of said ridges on both sides of the lowest part of said flexible mold plate are respectively situated at the same level as the lowest part or higher than the lowest part.