Patent ID: 7867756
Filing Date: 2011-01-11
Classification: B01L,G01N,Y10S

Abstract:
1. A sample analysis device comprising: a single layer porous sheet in which a sample is to be held; a front face supporting film stuck on a front face of the single layer porous sheet, the front face supporting film having a sample supply hole in a part thereof, and an air vent hole at a position above the porous sheet, so that the front face supporting film is in contact with and extends beyond all peripheral portions of the front face of the single layer porous sheet; and a rear face supporting film stuck on a rear face of the single layer porous sheet so that the rear face supporting film is in contact with and extends beyond all peripheral portions of the rear face of the single layer porous sheet, wherein, the front face supporting film and the rear face supporting film are stuck on the single layer porous sheet so that capillary action of the sample between the supporting films and the single layer porous sheet does not occur as the sample spreads through the porous sheet when the device is being used, the front face supporting film and the rear face supporting film are bonded with each other around all peripheral portions of the single layer porous sheet so that all faces of the single layer porous sheet are sealed, and such that the front face supporting film is in contact with an entire surface area of the front face of the single layer porous sheet except at the sample supply hole and the air vent hole, and the rear face supporting film is in contact with an entire surface area of the rear face of the single layer porous sheet, the single layer porous sheet is a single layer asymmetric porous sheet in which diameters of pores vary in a thickness direction of the sheet, and the single layer asymmetric porous sheet has a groove parallel with a width direction of the sheet.