| Sample  | 
        Dilution  | 
        No. of     Colony  | 
        No.of microorganisms/ ml | 
        Average 
          CFU/ml | 
       
      
        | Sample – 1  | 
        10-2
10-4
10-6 | 
        100
          23
          0 | 
        10000
          230000
          ×  | 
         
          80000 | 
       
      
        | Sample – 2 | 
        10-2
10-4
10-6 | 
        120
          33
          0 | 
        12000
          330000
          ×  | 
         
          114000 | 
       
      
        | Sample – 3 | 
        10-2
10-4
10-6 | 
        Too Numerous
          83
          7 | 
        × 
          830000
          7000000 | 
         
          2610000 | 
       
      
        | Sample – 4 | 
        10-2
10-4
10-6 | 
        Too Numerous 94
          11 | 
        × 
          940000
          11000000 | 
         
          3980000 | 
       
      |