Figure 2: Ozone concentrations in the hydrogen molecule water generated by electrolytic apparatus LB-002 (Lita hydrogen dual bottle) with whole or half amount of tap water. Note: (A, B) Data were calibrated and confirmed in the same way as Table 1 using a combination of the dissolved ozone detector capillaries for liquids using the indigo method and the potassium iodide-based colorimetric method. When it was measured using ozone detector capillary that produces isatin being almost colorless by reaction of ozone (with the detection agent indigo blue dye and changes whitish), the position of the changed colorless compound was shown by a magenta colored dashed square since the difference between the original color (light blue) and the changed color (slightly whitish) was feasible to distinguish on the photograph. (C) Whole amount (330 mL) (full) or half amount (165 mL) of tap water was electrolyzed for 10 minutes, and concentrations of ozone were measured by an electrode-type dissolved ozone checker DOZ-1000PE. The safety standards for dissolved ozone concentration (0.1 mg/L) in many countries including Japan and the United States, are indicated by dashed lines (B and C). Data are expressed in the bar chart as the mean ± SD (measured 3 times at n = 4).