Patent ID: 7485266
Filing Date: 2009-02-03
Classification: B01F,B01J,B81B

Abstract:
1. A micro fluid chip that leads liquids supplied from a plurality of liquid supply ports, respectively, to a minute flow passage, performs mixing/reaction of the liquids in the minute flow passage, and obtains a liquid having been processed from a liquid discharge port, wherein the liquid supply ports allow at least two kinds of liquids, which are different in viscosity from each other, to be supplied individually, a guide passage for a high-viscosity liquid is opened to a flow passage of a low-viscosity liquid to be directed downward, and an opening of the guide passage is provided in flow of the low-viscosity liquid, a plate-shaped micro fluid chip body, and a lid member and an adapter member, respectively, which are gastightly attached closely to main surfaces of respective front and back sides of the micro fluid chip body, and wherein grooves are provided on the main surface of the front side of the micro fluid chip body to make a flow passage of the low-viscosity liquid and a minute flow passage contiguous to the flow passage, the lid member is attached closely to cover the grooves, the groove, which makes the flow passage of the low-viscosity liquid, comprises a projection, the projection comprises a supply port of the high-viscosity liquid communicated to the back side of the micro fluid chip body, a recess contiguous to the supply port is provided to be directed downstream of the flow passage of the low-viscosity liquid, and the lid member covers the supply port and the recess to form the guide passage for the high viscosity liquids, wherein an inclination is provided on a top surface of the projection toward the lid member to define a space between the inclination and the lid member, which is directed downstream of the flow passage of the low-viscosity liquid.