Which preposition to use with electrolyzers

with Occurrences 1%

Some time ago, Mr. Laurent Naudin, it will be remembered, devised a method of converting the aldehydes that give a bad taste and odor to impure spirits, into alcohol, through electrolytic hydrogen, the apparatus first employed being a zinc-copper couple, and afterward electrolyzers with platinum plates.

Which preposition to use with  electrolyzers