Table 4. Measured Zone of Inhibition in the cm (Centimeter) Scale.

	zone of inhibition (in cm) against
	E. coli		P. aeruginosa		S. aureus
volume of sample	P1	P4	P1	P4	P1	P4
25 μL	0	0.9	1.3	1.1	0.8	0
50 μL	0.9	1.2	1.9	1.9	1.4	1.2
100 μL	1.6	1.6	2.2	2.3	1.9	2.0