| abstract |
The present invention provides an automated system for purification of a substance of interest. The system generally comprises an instrument for moving fluids through the system, a reagent pack for storing fluids, and a purification cartridge. The cartridge comprises two filtration units for binding substances based on different physical properties. The cartridge also comprises rotary valves for control of movement of fluids on the cartridge. In preferred embodiments, the system is useful for purifying RNA from blood samples. |