Fig. 7
From: Convenient methods for ingestion of molecular hydrogen: drinking, injection, and inhalation
Concentrations of H2 in the devices. a Concentrations of H2 in the H2-rich saline were measured at 1, 3, 6 and 12 months after preparation by Method IV. b Concentrations of H2 in the H2 gas inhaler were measured up to 3 h after starting. Data are presented as (a) individual measurements or (b) mean ± standard deviation (SD) for 3 independent measurements