Patent ID: 8562911

Claim:
A centrifugal rotor comprising: a rotor body comprising: a sample application chamber; a diluent container comprising diluents inside thereof; a mixing and splitting chamber disposed radially outward from the sample application chamber and the diluent container for receiving fluid from thereof, wherein the mixing and splitting chamber comprises a chamber tail disposed radially outward from the remaining area of the mixing and splitting chamber, the chamber tail is a relatively deeper area compared with the remaining area of the mixing and splitting chamber; a first metering chamber interconnected between the mixing and splitting chamber and the sample application chamber, wherein the first metering chamber is disposed radially outward from the sample application chamber; a second metering chamber disposed radially outward from and connected with the first metering chamber; a first excess dump connected with the second metering chamber; a distribution ring disposed radially outward from the mixing and splitting chamber, and connected with the mixing and splitting chamber via a first siphon, wherein an inlet of the first siphon is disposed at a corner of the mixing and splitting chamber, which is different from a corner of the mixing and splitting chamber where the chamber tail is disposed, and the chamber tail is radially outward from the inlet of the first siphon; and at least one react cuvette disposed radially outward from and connected with the distribution ring.