Sample metering port for analytical rotor

Details Sample metering port for analytical rotor Sample metering port for analytical rotor

G - Physics

01

N

G01N 1/18 (2006.01) B01L 3/00 (2006.01) B01L 3/14 (2006.01) B04B 5/04 (2006.01) G01N 1/10 (2006.01) G01N 33/49 (2006.01)

Patent

CA 2120244

2120244 9308893 PCTABS00021 An analytical rotor (10) for separating plasma from whole blood is made up of layers (12, 14) and (16) and has a blood application port (22) in layer (12) thereof. Blood introduced to the application port (22) is metered into a metering chamber (40) by capillary flow while the rotor (10) remains stationary. Excess blood passes into an overflow chamber (44) by capillary flow, either simultaneously with the flow to metering chamber (40) or later, after opening of vent passage connecting to overflow chamber (44). Subsequent rotation of the rotor (10) causes metered blood in the metering chamber (40) to flow into a separating chamber (60), typically retaining the separate plasma. A method of transferring a metered volume of fluid in rotor (10) is also disclosed.

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