Table 1.

The antimicrobial results of contact lens care solutions.

Concentration of ClO2 (ppm)	Concentration of γ-PGA (%)	Initial Microbial Concentration (CFU/mL)	Numbers of Pseudomonas aeruginosa Colonies after Seven Days	Numbers of Canidia albicans Colonies after Seven Days	Antimicrobial activity for P. aeruginosa/C. albicans
0	7.5	1 × 106 CFU/mL	4.7 × 106	8.4 × 105	N.I./16%
0	2		1.0 × 105	6.0 × 106	90%/N.I.
0	1.5		1.0 × 105	6.0 × 106	90%/N.I.
1.25	0		0	2.5 × 104	100%/97.5%
0.625	0		0	N.A.	100%/N.A.
0.3125	0		0	N.A.	100%/N.A.
1.25	1.5		0	0	100%/100%
0.625	1.5		9.6 × 105	N.A.	4%/N.A.
0.3125	1.5		5.0 × 105	N.A.	50%/N.A.

N.A.: Not applicable, this strain was not tested. N.I.: No inhibition. γ-PGA = poly-gamma-glutamic acid