Microchip for analysis, analysis system having the same, and analysis method

A microchip for conducting an analysis, the microchip comprising:

• a substrate having a reaction bath section, a first flow channel to which are connected the reaction bath section and a buffer solution supply channel that supplies a buffer solution, a second flow channel to which are connected a sample solution supply channel that supplies a sample solution containing a first substance and a discharge channel that discharges the sample and buffer solutions to an exterior of the substrate, a connecting channel connecting the first flow channel to the second flow channel, first and second valves controllable between open and closed states and disposed in the first flow channel on opposite sides of the connecting channel and between the buffer solution supply channel and the reaction bath section, and third and fourth valves controllable between open and closed states and disposed in the second flow channel on opposite sides of the connecting channel and between the sample solution supply channel and the discharge channel, the reaction bath section being positioned relative to the connecting channel and the first, second, third, and fourth valves so that by selectively opening and closing the first, second, third and fourth valves, the buffer solution from the buffer solution supply channel flows first into the reaction bath section at a preselected speed followed by the flow of the sample solution from the sample solution supply channel into the reaction bath section, via the connecting channel, at the preselected speed so that the first substance reacts with a second substance in the reaction bath section.

A microchip for conducting an analysis, the microchip comprising:

• a substrate having a reaction bath section, a first flow channel to which are connected the reaction bath section and a buffer solution supply channel that supplies a buffer solution, a second flow channel to which are connected a sample solution supply channel that supplies a sample solution containing a first substance and a discharge channel that discharges the sample and buffer solutions to an exterior of the substrate, a connecting channel connecting the first flow channel to the second flow channel, first and second valves disposed in the first flow channel on opposite sides of the connecting channel and between the buffer solution supply channel and the reaction bath section, and third and fourth valves disposed in the second flow channel on opposite sides of the connecting channel and between the sample solution supply channel and the discharge channel, the first, second, third and fourth valves being controllable between open and closed states to extract air from the first flow channel, second flow channel and connecting channel so that by subsequently selectively opening and closing the first, second, third and fourth valves, the buffer solution from the buffer solution supply channel flows first into the reaction bath section at a preselected speed followed by the flow of the sample solution from the sample solution supply channel into the reaction bath section, via the connecting channel, at the preselected speed so that the first substance reacts with a second substance in the reaction bath section.