How to gauge hydrogen of 99.999%?
The hydrogen made by GOC employs the high-tech solid oxide proton exchange membrane that produces hydrogen by electrolysis of pure water, so the impurity analysis shows merely trace oxygen and aqua. The hydrogen purity more than 99.999% is estimated due to the dew-point value under -66 degrees Celsius (-5ppm) and the oxygen value under 5ppm processed by the HGL purifier in charge of filtration and purification.