Abstract: Provided is a feature for performing more accurate analysis in a sample separation adsorption method. A gel cassette (22) is provided with a separation medium (19) for separating out a sample by electrophoresis and discharging the sample, a first insulating portion (13a) and a second insulating portion (13b) sandwiching the separation medium, and warping prevention portions (20) that are inserted between the first insulating portion (13a) and the second insulating portion (13b), and that mitigate warping of the first insulating portion (13a) and the second insulating portion (13b).

Abstract: An automatic electrophoresis apparatus includes: a transfer film supply unit configured to supply a transfer film; a sample transfer unit configured to transfer a sample separated by electrophoresis to the transfer film; a post-processing unit configured to perform processing of the transfer film, to which the sample has been transferred, to obtain a transfer image thereof; and a transporting unit configured to transfer the transfer film along a transporting direction between each of units. The transfer film is provided with guide members that are configured to guide and support along the transporting direction.

Abstract: The present invention provides a biomolecular analysis device which suitably realizes sample adsorption. According to an embodiment of the present invention, a biomolecular analysis device (1) includes: a sample separating section (5); a pressing tool (6); and a transfer film (7) which is provided between the sample separating section (5) and the pressing tool (6). The pressing tool (6) (i) presses, with a fixed pressure, the transfer film (7) toward a second opening (58) of the sample separating section (5) and (ii) restricts a region which is located between the sample separating section (5) and the second buffer solution tank (4) and in which there is a buffer solution.

Abstract: An analysis method includes the steps of performing two-dimensional electrophoresis of analysis objects in an isoelectric direction and in a molecular weight direction that is substantially perpendicular to the isoelectric direction, cutting a medium containing the analysis objects, which have been subjected to the two-dimensional electrophoresis, in a lattice pattern along cut planes in the isoelectric direction and along cut planes in the molecular weight direction, and comparing the analysis objects between the cut mediums.

Abstract: A sample separation and adsorption appliance (100) includes a negative electrode (2), a positive electrode (3), a sample separation unit (6) that has a first opening (17) opened to a side facing the negative electrode (2) and a second opening (18) opened to a side facing the positive electrode (3), the sample separation unit containing a separation gel (7), and a slit structure (8) including a slit (1) at a position facing the second opening (18). A transfer film (9) is arranged between the second opening (18) and the slit (1).

Abstract: To easily introduce a sample into a sample separation medium without formation of a well in the sample separation medium, a cassette (100) for electrophoresis includes a porous member (132) containing an unseparated sample, a sample separation medium (112) for separating the sample, and a pushing tool (131) that presses the porous member (132) or the sample separation medium (112) so that the porous member (132) is pushed into the sample separation medium (112).

Abstract: There is provided an electrophoresis instrument capable of easily performing a separation of a biological sample by isoelectric focusing with excellent reproducibility. An electrophoresis instrument (10) includes an electrophoresis chamber (1) in which a sample separation medium (42) for separating the biological sample by electrophoresis is installed. A depression (2) for injecting a sample solution that includes the biological sample is provided on an installation surface (1a) on which the sample separation medium (42) of the electrophoresis chamber (1) is installed.

Abstract: An electrophoresis control device, on the basis of a current value of current flowing due to applying a voltage to a conducting medium, controls an amount of electric power to supply to that conducting medium.

Abstract: An electrophoresis gel, in which a good pH gradient or concentration gradient of a gel-forming monomer is formed, is produced. In addition, the production efficiency of an electrophoresis reaction tool is improved and the production processes are simplified. At least one of a first process to add a gel-forming monomer to a first solution containing an initiator to initiate polymerization of the gel-forming monomer by external energy in such a way that a pH gradient or concentration gradient of the gel-forming monomer is formed and a second process to initiate the polymerization of the above-described gel-forming monomer in the first solution, to which the above-described gel-forming monomer has been added, by using the above-described external energy is included.

Abstract: With intent to increase the number of sample spots separated through two-dimensional electrophoresis and to enhance the intensity in detection of the spots, a two-dimensional electrophoresis kit includes a first medium 7 for first dimensional electrophoresis, a second medium 8 for second dimensional electrophoresis, and a casing 20 that contains at least the first medium 7 and the second medium 8, wherein the first medium 7 is formed by supplying, to the casing 20, a first solution containing a sample on which the first dimensional electrophoresis is to be performed, and the first medium 7 and the second medium 8 are contained close to each other.

Abstract: A sample separation and adsorption appliance (100) includes a negative electrode (2), a positive electrode (3), a sample separation unit (6) that has a first opening (17) opened to a side facing the negative electrode (2) and a second opening (18) opened to a side facing the positive electrode (3), the sample separation unit containing a separation gel (7), and a slit structure (8) including a slit (1) at a position facing the second opening (18). A transfer film (9) is arranged between the second opening (18) and the slit (1).

Abstract: A chip (10) for electrophoresis is provided, the chip including a gel (9) composed of a polymer prepared by polymerizing a monomer, and a support (1) configured to support the gel (9). In the chip (10) for electrophoresis, a surface of the support (1) in contact with the gel (9) is covered with a surface treatment compound (4) containing the monomer or a derivative of the monomer.

Abstract: A device for electrophoresis applies a voltage to a medium in contact with a plurality of electric conductors so that a potential of adjacent conductors is within a certain range. This allows preventing decline in electrophoresis speed. A device for electrophoresis and transfer includes an electrode having a plurality of electrode regions being insulated one another and arranged in a specific direction. This allows providing a practical and easy-to-use device for electrophoresis and transfer. A device for transfer alters an applied voltage or applied voltage duration to a certain position to another position. This allows improving transfer efficiency.

Abstract: A solution ejecting method includes a first ejection step of ejecting an electrophoresis-gel-forming monomer solution containing at least a monomer that forms a gel structure and a gel polymerization accelerator that activates a gel polymerization initiator and a second ejection step of ejecting a gel polymerization initiating solution containing the gel polymerization initiator onto the electrophoresis-gel-forming monomer solution.

Abstract: An electrophoresis apparatus includes a sample separating section for containing a sample separating medium for separating a sample in a horizontal direction, the sample separating section containing the sample separating medium in such a manner that the sample separating medium has an exposed portion at least one end of a surface of the sample separating medium, the surface being in parallel with the horizontal direction; and medium connecting means for connecting a sample containing medium to the sample separating medium at a connecting region, the sample containing medium containing a sample, and the connecting region satisfying a particular equation. By this, an electrophoresis technique with better accuracy than conventional arts can be provided.

Abstract: A sample separation/adsorption appliance (100) according to one embodiment of the present invention includes: a first buffer solution tank (103) equipped with a first electrode (101) and used for holding a first buffer solution; a second buffer solution tank (104) equipped with a second electrode (102) and used for holding a second buffer solution; a sample separation section (110) that holds a sample separation medium (131) for separating a sample; and a conductive section (120) that holds a conductive medium (133), wherein: the sample separation medium (131) and the conductive medium (133) are in contact with the sample adsorption member (132), respectively, on the opposite sides thereof; an end of the sample separation medium (131) opposite to an end being in contact with the sample adsorption member (132) is connected to an inside of the first buffer solution tank (103); and an end of the conductive medium (133) opposite to an end being in contact with the sample adsorption member (132) is connected to an

Abstract: A production method of the present invention is a method of producing a reaction instrument for electrophoresis (10), which is constituted by (i) a substrate (1) and (ii) an electrophoresis gel (3) which is immobilized on the substrate (1), including the steps of: (i) discharging a liquid to a surface of the substrate (1) on which surface the gel is to be immobilized, thereby forming a liquid pool (5); and thereafter (ii) discharging a gel solution to the liquid pool (5). This provides a method of producing a reaction instrument for electrophoresis, which method makes it possible to form a gel with high reliability in high yield.

Abstract: A device for electrophoresis applies a voltage to a medium in contact with a plurality of electric conductors so that a potential of adjacent conductors is within a certain range. This allows preventing decline in electrophoresis speed. A device for electrophoresis and transfer includes an electrode having a plurality of electrode regions being insulated one another and arranged in a specific direction. This allows providing a practical and easy-to-use device for electrophoresis and transfer. A device for transfer alters an applied voltage or applied voltage duration to a certain position to another position. This allows improving transfer efficiency.

Abstract: An instrument for electrophoresis includes a sample-separating portion in which a slab sample-separating medium that separates a sample is provided. The instrument for electrophoresis includes a sample-transporting portion that transports a sample-containing medium containing the sample to the sample-separating portion. The instrument for electrophoresis includes a positioning portion that is provided to the sample-separating portion and/or the sample-transporting portion and used for connecting the sample-transporting portion to a predetermined position of the sample-separating portion.

Abstract: The present invention is to provide a sample separation instrument used in a sample separation apparatus which includes: holding means for holding a first medium supporter which supports a first medium; and driving means for moving fixing means or the holding means in a direction parallel or perpendicular to a plane whose sides extend in the first direction and in the second directions. The sample separation instrument includes an insulator for storing a second medium which allows a sample separated in the first medium in the first direction to be further separated in the second direction different from the first direction, wherein: the insulator includes a first opening and a second opening each of which defines the second direction in which the second medium is electrified, and the second opening has a shape which allows the first medium containing the separated sample to be attached to the second medium along the first direction.