No vakkuum (((all homemade equipment .. The Middle Ages (((Check for
good equipment -.. Do better and share the results of all will be good!.
Of course there is KOH.
Open cell, hydrogen is passed, slightly enriched D.
Google translator changes the meaning :(. Sorry.
There is quite a language barrier. Could you explain what you did, all experimental parameters and so on to e.g. @Peter Gluck
than he could give us a proper english translation. Thanks for the great work!