Figure 2 : Modeling effect of tip depth on mixing. a) Circulation zone (yellow) and dead zone (gray) with different tip depths for 1.5 mL Microcentrifuge tube obtained from simulation. b) Percentage of volume in circulation zone with changing tip height for four sizes of tubes 1.5,1.5, 5, 15, and 50 mL with 1.5,1, 5, 10, 15 mL sample respectively.