... stable quality Ultra Pure Introduction: DH-300 model hydrogen generator, use Palladium filtration membrane technology, could produce ... 300 whole automatic control, no hydrogen storage inside, have short of water, over pressure, hydrogen leakage safety protection, easy ... , no storage, greatly safety. Alarms functions10. Size: 380*200*370mm11. Weight: 15kgs 99.999999% ultra pure Hydrogen Generator