Table 2. Average particle size, PdI and Zeta potential of different batches of silver NPs prepared by chemical method.

Batch Number	Z- Average (d.nm)	PdI (Poly dispersity index)	Zeta potential (mV)
1	129	0.411	-2.74
2	112	0.561	-2.93
3	135	0.419	-2.16
4	145	0.303	-2.04
Mean ± SE	130.25 ± 6.92	0.42 ± 0.05	-2.47 ± 0.30