To in the discharge lamp accumulation element null of forma of the porous compression body in order the meter and to interpose the liquefied mercury or the liquefied mercury alloy

摘要

The storage element is a porous pressed body which stores the fixed quantity of the metering material in its pores. The pressed body consists of a single metal or of a plurality of metals forming a mixture or an alloy, the single metal or the mixture or alloy in turn not forming an alloy with mercury, being wettable by mercury and having a high oxidation resistance. The elements of subgroups 4 to 8 of the periodic table are particularly suitable as the single metal or as the main constituent of the mixture or alloy.