John G.
Does not produce enough hydrogen in my opinion
This bottle requires a double cycle(running it two consecutive times, open the cap after the first run to relieve pressure) to reach around .5 to .7 mg/l of hydrogen. To reach my desired ingestion of 7 mg/l per day I have to consume 10-12 full double-cycled bottles per day. I tested this with 6ml beaker and H2Blue drops. Other bottles on the market I have seen produce better hydrogen with less cycling required. The excess need to cycle will lead to premature product wear cutting the life space in half.



