Abstract: The disclosure relates to methods and apparatus for processing fluids through the use of a magnetic assembly wherein the magnetic assembly includes at least one fluid chamber containing a fluid and magnetic particles.

Abstract: Systems and methods of identifying reagents loaded into a fluid handling system can comprise programming a protocol for preparing a sample into a controller of the fluid handling system, loading multiple reagent vessels into a carousel of the fluid handling system, imaging individual labels of the multiple reagent vessels with an imaging device to produce label images, comparing information in the label images to identification information located in a database in communication with the controller, and determining if appropriate reagents have been loaded into the carousel to perform the protocol. A fluid handling system can include a deck, a tube holder, an imaging device, a pipettor, a non-transitory computer-readable storage medium and a processor configured to perform the method.