Patent 7699967 was granted and assigned to ARKRAY on April, 2010 by the United States Patent and Trademark Office.
The present invention relates to an analytical tool (X) which includes a substrate (1), a flow path for moving a sample along the substrate (1), a reagent portion (14) provided in the flow path, and an insulating film (13) covering the substrate (1) and including an opening (15a) for defining a region for forming the reagent portion (14). The insulating film (13) further includes at least one additional opening (15b) positioned in a longitudinal direction (N1) relative to the opening (15a). For instance, the flow path is configured to move the sample by capillary force.