The company I work for is just starting to look at moving to hydrogen fired reheater furnaces in the coming years. If they do they will need a lot better management of it than they do with their current gas. It will be 5 to 10 years away yet though. As the DSEAR manager for the site I don't look forward to having large hydrogen generators and/or storage tanks here knowing how poorly they look after our current gas system.
My hydrogen generator as it came in (cost: 50 euro including shipping within the Netherlands)It produces 800-1200 PPB (Parts Per Billion) of hydrogen gas with 4 Watt of electrolytic power, while the glass can contain 450 ml of water.(mineral water is recommended, at the moment i still use tap water)With rechargeable stainless steel base where the electrolysis takes place, a thick borosilicate glass midsection, and a stainless steel lid:This plastic part can be screwed directly on the business end, filled with water, and is then used to attach a nasal tube for inhaling of the hydrogen gas.It also doubles for direct attachment of a prefilled spring water bottle: