... 500 ml/min 2. H2 purity: 99.999% 3. PEM technology. No chiemical 4. Pass CE certificate 1. Introduction:The PEM ... , producing highly pure hydrogen by utilizing PEM( Proton Exchange Membrane) technology to electrolyze pure water (no adding alkali), are light,highly ... are advanced patent products.2. H2 generator Character:SPE/PEM technology ( proton exchange membrane)"Pure Water" only, no chemical(KOH, ...