Based on the Model HGH high purity hydrogen generator and Model HYA air generator, GHA-series generator combines the two with great quality and user friendly design. It is a perfect combination of safety, convenience and reliability, featuring advanced technique and stable performance. Features Hydrogen and air can be generated together or separately Air passage: since the cylinder is made of stainless steel, there is no rustic water like in generators which use carbon-steel cylinder Hydrogen passage: advanced switching power supply is adopted so that efficiency of electrolysis can be highest Multi-stage protective device is installed, improving effectively the safe operation of the instrument.