VERFAHREN ZUR HERSTELLUNG EINES FEUCHTEN, GASFOERMIGEN STOFFES EINES GEEICHTEN FEUCHTIGKEITSGEHALTES UND REAKTOR ZUR DURCHFUEHRUNG DIESES VERFAHRENS

摘要

Moisture calibration standards for analytical instruments are produced by passing a gas containing hydrogen and nitrous oxide through a reactor containing a finely divided silver on alumina catalyst that is heated to a constant temperature wherein the hydrogen and oxygen in the form of nitrous oxide are combined to form water vapor in the gas. The reactor is constructed so that the catalyst is contained in a uniformly heated chamber and will provide stoichiometric combination at varying outlet flow rates. A further feature of the reactor is that it is lightweight, easily portable, and can be readily coupled to instruments, such as a hygrometer or other devices for calibration.