Sl.No.
<
Exposure
<
No. of Colonies
<
1.<
0<
83 × 10
4
<
2.<
30 min<
65 × 10
4
<
3.<
60 min<
30 × 10
4
<
Table 4:
Effect of UV- B Radiation (0.4mW/cm
2
) exposure (min) on
E. coli
growth.