A primary antibody bead suspension for an enzyme-linked immunoassay procedure is formed of a quantity of primary antibody coated magnetic beads uniformly dispersed and held in suspension by a thixotropic non-Newtonian fluid. The embodiments herein have led to the development of an optimized ligation step used in the sample preparation for sequencing reactions. The speed of the blood pump is then decreased from the first speed to a second speed and is operated at the second speed for a second amount of time. The power mechanism includes an internal power supply source and a switch.