MICROCHIP AND ANALYSIS METHOD USING IT

摘要

A microchip which can dry and fix an objective substance of analysis in a short time while sustaining separative power in a separating operation when the microchip is used for separating an analytical sample without causing contamination or overflow. The microchip consists of a substrate and a lid wherein the substrate has a groove-like channel in the upper surface and a substrate reservoir coupling with the channel, and the lid, sealing the upper surface of the channel hermetically and being removable from the substrate, comprises a through hole formed at a position corresponding to the substrate reservoir, a lid reservoir formed on the inside of the through hole and holding liquid introduced when the lid seals the upper surface of the channel hermetically, and a partition wall formed on the bottom of the lid reservoir. The microchip is characterized in that the opening area of partition wall is smaller than the opening area of the lid reservoir above the partition wall.