Example 6
A microcentrifuge tube (EPPENDORF®) comprising a sample can be placed against a magnetic tube rack (EPPENDORF®) for 2 minutes and then the liquid can be aspirated. The beads can be resuspended in an RNase reaction (3 μl RNase Mix (ROCHE™), 1 μl RNase H (NEW ENGLAND BIOLABS®), 5 μl RNase H 10× Buffer (NEW ENGLAND BIOLABS®), and 41 μl nuclease-free water). The sample can be incubated at 37° C. for 1 hour, removed from 37° C., and placed against a magnetic tube rack (EPPENDORF®) for 2 minutes. The sample can be washed with 750 μl of nuclease-free water+0.01% Tween 20 (H2O-T), without resuspending the beads and keeping the tube disposed against the magnetic tube rack. The liquid can then be aspirated. The sample can be washed with 750 μl H2O-T without resuspending the beads and while keeping the tube disposed against the magnetic tube rack. Next, the liquid can be aspirated while keeping the tube disposed against the magnetic tube rack. The tube can then be removed from the magnetic tube rack and the sample can be resuspended in 40 μl of nuclease-free water.