Sample Initial level 1st month 2nd month 3rd month 4th month 5th month 6th month
Swp3 2 2 2 5 7×101 3×102 2×103
Swp4 0 0 2 5 1×101 2×101 35
Swp5 0 0 2 2 2 7 15
Samples were triplicated and average cfu/g (colony forming units per gram) was taken.
Table 3: Total plate count (cfu/ g) within 6 month period.