The hydrogen is made from methanol-water reforming in a membrane reactor, with a palladium membrane to purify the H2. It’s a small chemical plant. You can still adjust things, but we closed up the front a bit, so folks don’t stick their fingers where they don’t belong. There’s also a semi-transpartent tank so you have a decent idea of the liquid level. The use of the membrane reactor reduces energy use, and the metal membrane is why our hydrogen is purer. Our competition, (Porter, etc) uses only a desiccant.