I activated the membrane, everything was done as per the instructions. After activation, I measured the hydrogen water charge; it shows -350 after 10 minutes, but I haven't calibrated the device yet. Perhaps after calibration, it will show a higher value. I will continue to use it. I'll also connect the hydrogen inhalation system; I figured out how to connect the tube, it's not complicated at all. Hydrogen water works, that's for sure, because before purchasing this bottle I used another model that was less effective. The device provided water with a lower hydrogen charge than this generator does. I started feeling much more energetic, my allergic skin reactions subsided, I became less tired, many advantages, in short. . .