Sample Dilution Concentration of tetracycline (m/ml) No. of Colony No. of Bacteria/ml
1 10-3 10-3 10-3 30 60 100 53 24 13 53×10-3 24×10-3 13×10-3
2 10-3 10-3 10-3 30 60 100 77 39 19 77×10-3 39×10-3 19×10-3
3 10-3 10-3 10-3 30 60 100 103 61 27 103×10-3 61×10-3 27×10-3
4 10-3 10-3 10-3 30 60 100 185 73 53 185×10-3 73×10-3 53×10-3
Table 4: Bacterial count (dilution 10-4) with different concentration of tetracycline.