Can the HOH Cell be operated under vacuum?
Yes the system is designed to work under vacuum, in fact gas production is inversely propitiated to pressure, the more pressure the less the gas. It is not essential that the system operates under vacuum though it does help in a variety of other ways. By drawing air (under vacuum) through the cell helps keep it cool, it helps to remove the gas bubbles from the electrode surface and possibly improving gas quantity and it also helps increase the overall concentration of HOH gas in the system.
