Table 1.

Effects of electrolysis using the hydrogen-dissolved water-generating electrolytic apparatus LB-002 (Lita hydrogen dual bottle) on concentrations of hydrogen, ozone, free residual chlorine, combined residual chlorine and total residual chlorine

Electrolysis	Hydrogen (μg/L)	Ozone (mg/L)	Free residual chlorine (mg/L)	Combined residual chlorine (mg/L)	Total residual chlorine (mg/L)
Before electrolysis	< 0.005	N.D. (< 0.05)	0.18±0.03	0.17±0.03	N.D.
10 min	444±7.2	N.D. (< 0.05)	0.12±0.02*	0.11±0.02**	N.D.

Note: Date are expressed as the mean ± SD (n = 12). The examinations were four times executed, which substantially accorded with each other. *P = 0.0006, **P = 0.0005 (Student’s t-test). N.D.: Not detected.