Teltron Critical Potentials Tube S with He-Filling for quantitative investigations of inelastic collisions of electrons with inert gas atoms. Cathode filament voltage: UF </= 7V; Anode voltage: UA </= 60V; Anode current: IA </= 10 mA
Geiger Counter, Versatile, easy to use and compact precision instrument for measuring alpha-, beta- and gamma-radiation. Filter selection switch at the front of the Geiger-Muller counter tube for filtering out types of radiation
Tube holder to support all S series (student) electron tubes for easy and safe operation. The five pin sockets for the tube are concealed inside the tube holder. A cathode protection switch is integrated into the tube holder, to protect the heated cathode from excessive voltage.