Geiger-Muller Tubes

Geiger-Muller Tubes
SBM-20 (CБM-20)
Geiger-muller counter tube, it detects hard beta (β) and gamma (γ) radiation.


SI-29BG (СИ-29БГ)
Compact size, Good sensitive. It detects hard beta (β) and gamma (γ) radiation.


SI-3BG (СИ-3БГ)
Geiger-muller counter tube, it detects beta (β) and gamma (γ) radiation.


All tubes are brand new, never used, old stock (NOS), produced in Eastern-Europe/Eurasia (like Russain Federation) before the 80's. They rested in a warehouse in Siberia for decades! They will see the sunlight for the first time when they'll get unpacked! Definitely not taken out from ancient or wrong machines!

For the datasheets thanks for Dieter.