Three separate flasks carried the prepared block copolymer stock solution, milliQ water and the diluting solvent THF. The setup consisted of three peristaltic SF-10 pumps which were used to deliver the three components with correct flow rate using PFA tubing of 0.75 mm internal diameter and 1/16" outer diameter. Each of the pumps were connected to the control computer via USB to RS-232 cables. The cable connected the RS-232 male serial port in SF10 pump to USB port in the control computer and the flow rates of the pumps were controlled by the python script.