Figure 5.

The time course of the water characteristic parameters in hydrogen-rich water boiled or left without temperature intervention.

Note: Six liters of tap water was supplied in the facial washbowl for the high concentration hydrogen-rich water bath and electrolyzed for 30 minutes, and four kinds of water characteristic parameters were measured over time. (A–D) Dissolved hydrogen (DH), oxidation-reduction potential (ORP), dissolved oxygen (DO) concentration, pH in hydrogen-rich water, respectively.