Hydrogen Water Generator Bottle, Rechargeable Hydrogen Water Machine with SPE and PEM Technology, Hydrogen Water Maker Hydrogen Content up to 1200-1500 PPB (White)

When I first received it I did a hydrogen test with blue drops and the 5 minute cycle gave 0.9 PPM. I used the machine for one week to let it break in, as well as cleaned the electrode with the cleaning mode as well as soaking with vinegar. Tested the hydrogen again and the 5 minutes cycle gave 1.3 PPM and running the 5 minute cycle twice gave 2.3 PPM. This is MUCH better than the LevelUpWay machine that I tried before and returned (and this one is quite a bit cheaper!) I also did the chlorine test on the water and there is no chlorine. Very happy with the technical performance of the machine in general.There are however 2 issues with the machine that are not great:1) In order to properly seal the cap it becomes very very tight. It actually injured my wrist slightly to open it. But since then I have figured out the way to hold it while twisting that works for me to avoid injury.2) I wish it came with a nose tube adapter. It is a fairly low cost add on for the manufacture and adds a lot of value, so I don't know why they didn't include it to come with a good performing machine.