Design and Fabrication of a PDMS-Based Manual Micro-Valve System for Microfluidic Applications

Table 2

Results of studying effect of screw operation on liquid volume at outlet of microfluidics.

Turn number of screw in closing trip, ()	Flow rate (μL/min)	Liquid volume, , (μL)	Percentage (%)
0	250	245	98
1/2	250	130	52
1	250	70	28
1 1/2	250	25	10
2	250	~0	0
3	250	~0	0