Figure 6: Maximum temperature (y-axis) estimated for different power density (x-axis) and pulse time (5-10,10-10,15-10 and 20-10 on-off pulses respectively) for each of the four tubes – a) 1.5 mL microcentrifuge tube b) 5 mL microcentrifuge tube c) 15 mL conical tube d) 50mL conical tube.