Patent ID: 7901626
Filing Date: 2011-03-08
Classification: B01L,Y10T

Abstract:
1. A fluid handling unit comprising: an container body having a bottom portion and a side portion for forming a fluid housing section therein, said container body having an opening at an upper end thereof; a partition wall portion which extends from the bottom portion for dividing the fluid housing section of the container body into a first fluid housing chamber and a second fluid housing chamber; and a communication passage which passes through the partition wall portion to establish a communication between the first fluid housing chamber and the second fluid housing chamber, wherein the communication passage is associated with the first and second fluid housing chambers for causing a liquid in the first fluid housing chamber to enter the second fluid housing chamber due to capillarity while preventing the liquid in the second fluid housing chamber from entering the first fluid housing chamber when the quantity of the liquid fed into the fluid housing section from the opening of the container body is not larger than a predetermined quantity, and for allowing the liquid in the second fluid housing chamber to enter the first fluid housing chamber when the quantity of the liquid fed to the fluid housing section from the opening of the container body exceeds the predetermined quantity, and wherein said communication passage comprises a plurality of slits, and the width of each of said slits on the side of said first fluid housing chamber is larger than that on the side of said second fluid housing chamber.