TABLE 6.

Bacterial susceptibility toward PHMB in planktonic and biofilm growth modes before, during, and after repeated exposure to PHMB in aqueous solution or in formulation^a

Bacterium	Concn (mg/liter)
	MIC						MBC						MBEC
	UF			F			UF			F			UF			F
	P0	P14	X14	P0	P14	X14	P0	P14	X14	P0	P14	X14	P0	P14	X14	P0	P14	X14
S. aureus†	3.9	23.5 (9)	15.6	3.9	3.9	3.9	3.9	125	15.6	3.9	15.6	7.8	15.6	125	15.6	15.6	125	31.3
E. coli†	15 (10)	31.3	15.6	7.8	15.6	NA	15 (10)	62.5	62.5	15.6	31.3	NA	62.5	62.5	62.5	62.5	31.3	NA
E. faecalis†	7.8	31.3	15.6	5.9(1)	15.6	7.8	7.8	125	15.6	7.8	31.3	7.8	14.3 (3)	125	31.3	15.6	125	31.3
P. aeruginosa†	22.8 (15)	31.3	62.5	15.6	15.6	15.6	22.8 (15)	125	125	31.3	125	31.3	250	250	250	250	62.5	62.5
M. osloensis*	7.8	31.3	3.9	1.0	1.0	NA	62.5	31.3	31.3	7.8	7.8	NA	62.5	62.5	31.3	31.3	62.5	NA
A. baumannii*	7.8	31.3	7.8	9.1 (3)	15.6	NA	62.5	125	62.5	31.3	62.5	NA	62.5	250	62.5	62.5	125	NA
P. putida*	28.9 (8)	31.3	NA	15.6	15.6	NA	62.5	62.5	NA	31.3	62.5	NA	125	125	NA	125	125	NA
C. sakazakii*	7.8	15.6	15.6	31.2	15.6	NA	104 (32)	125	125	15.6	31.3	NA	62.5	250	125	62.5	125	NA
E. coli*	7.8	7.8	31.3	7.8	15.6	NA	15.6	250	31.3	15.6	31.3	NA	62.5	250	31.3	62.5	31.3	NA

^aSee footnote in Table 1.