HX-300C/600C is equipped world advanced SPE technology ( solid polymer electrolyte), also called PEM( Proton Exchange Membrane). Through electrolysis of pure water, it produces high purity hydrogen reaching upwards of 99.99%. One machine is suited for several applications: Inhalation; Making hydrogen rich water; skin treatment etc... HX-300C/600C are advanced digital type machine. With large English digital screen, display H2 flow, using time and water level condition. Touch screen button, microcomputer automatically control, very easy operation. H2 flow adjustable at random HX-300C: 0--300ml/min, HX-600C: 0--600ml/min. Using time can set from 0--99hours, 0--60mins. Also have short of water alarm function. Whole machine outside is made high quality ABS plastic. Streamline design, portable to take. Due to our 20 years production experience, these durable machines will continue to produce hydrogen for 5--10 years trouble-free. Model HX-300C HX-600C H2 Flow Adjustable from 0--300ml/min Adjustable from 0--600ml/min H2 Output Purity 99.99% H2 Output Pressure About 0.2MPa ( Under Stable Pressure ) Input Power ( W/hr )