Apllied no. of cells mI1 Plate counting (CFU mI1) DNA sensor (-nF cm-2)
105 (9.5 ± 0.5)×104 84 ± 9
104 (7.8 ± 0.3)×103 57 ± 5
103 (8.8 ± 0.2)×102 40 ± 4
102 (9.2 ± 0.2)×101 27 ± 4
101 ND 21 ± 3
100 ND 10 ± 1*
*Below Limit of Detection. ND = Not Detected
Table 2: Comparison: Detection of E. coli cells at concentration range 1 to 105 cells ml-1 using plate counting method and DNA based technique, capacitive DNAsensor.
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