Spinning vessel systems and methods for mixing, suspending particulates, aliquoting, washing magnetic beads, and concentrating analytes

A system for mixing liquids and uniformly suspending particulates comprising:

• at least one substantially cylindrical vessel with a center and a radius comprising a vessel opening, a vessel base interior, and a vessel base exterior, the vessel further comprising;
• a plurality of side fins, the side fins comprising a side fin width and a side fin height;
• a plurality of interior projections extending from the vessel base interior, the interior projections comprising an interior projection width and an interior projection height;
• a plurality of circumferences, the circumferences each comprising a circumference radius;
• wherein the circumferences comprise the following radii:
• 6.4 mm, 14.2 mm, 19.1 mm, 22.9 mm, 26.2 mm, 31.8 mm, 34.3 mm, 38.7 mm, 40.7 mm, 42.7 mm, 44.5 mm, 46.3 mm, 49.7 mm, 51.3 mm, 54.3 mm, 58.7 mm, 62.2 mm;
• or,
• wherein the circumferences comprise the following radii:
• 4.5 mm, 13.50 mm, 22.50 mm, 31.50 mm;
• wherein neither the side fin width nor interior projection width extends within 1.5 mm of any of the circumferences;
• a drive base operably connected to the vessel base exterior;
• a motor operatively connected to the drive base, wherein the motor rotates the vessel along the vessel's center;
• and,
• a motor controller with speed and rotational direction control.