Dilution of  silver nanoparticles for same no. of bacteria  in mg/ml 10mg/ml 5mg/ml 2.5mg/ml 1.25mg/ml 0.625mg/ml 0.312mg/ml
Set 1 + + + +
Set 2 + + + +
Set 3 + + + +
Set 4 + + + +
Set 5 + + +
Set 6 + + + +
Positive (+) = Turbidity indicating growth
Negative (-) = No turbidity indicating absence of growth
Table 1: Bacterial growth in different concentrations of silver nanoparticles after 24 hours