Production of minute amounts of dry H2 gas
I need a relatively simple way to produce a few milliliters of dry H2 gas. I do NOT want HHO and I do NOT want electrolysis of water, I also would like this method to produce little to no water as a byproduct. I'm looking for generators because the minimum tank size of hydrogen I could buy (unless someone could locate a supplier in the UK that would sell me something the size of a propane tank or smaller) is far too large.
I'm Interested in a chemical reaction or hydrocarbon cracking method that would require a maximum of 200 degrees C if it requires energy input, but I don't mind if it's terribly exothermic (unless its an thermite-like reaction, then we have a problem) since I have a very effective cooling system in place for it and the rest of the system.
I forgot to add what its for, glow brazing. It'll be ionized and remove surface oxides while simultaneously heating the parts to be brazed.