3. Results and discussion Fig. 1 presents the enumeration results for S. aureus (n = 293) and E. coli (n = 297) as percentages of samples that contained colony concentrations ranging from < 1 to > 103 cfu/ml in 50 cfu/ml increments.
3. Results and discussionFig. 1 presents the enumeration results for S. aureus (n = 293) and E. coli (n = 297) as percentages of samples that contained colony concentrations ranging from < 1 to > 103 cfu/ml in 50 cfu/ml increments.