A cryogenic container includes an inner vessel for containing a cryogenic fluid, and an outer vessel for insulating the cryogenic fluid from the environment. A power supply voltage measurement is also determined. The article is dried at elevated temperatures and then sintered in a reducing atmosphere to provide a dense hydrogen permeable portion near the surface of the sintered mixture. Preferably, the counter reading is taken as a basis for adjusting the speed or power of time-critical or performance-critical circuit parts in the circuit configuration so that an operating state with an intermediate switching speed is obtained. It is satisfactory in stability and absorption kinetics andor a low irritation potential. The system further comprises a reservoir having a generally dry mixture disposed therein, a plurality of particles suspended in the generally dry mixture, a biasing member applying a biasing force to the generally dry mixture in the reservoir, and a sieve electrode system in electrical communication with the grid.