SBM21 thin wall beta+gamma sensitive Geiger tube. New, manufactured in 2024, tested in my lab.
Working voltage 350-475 V
Plateu length - at least 100 V
Plateau slope - less than 15%/100V
Gamma sensitivity for Cs137 source - 650 - 950 pulses per uSv of dose
Want to build a portable or even keychain gamma and/or beta dosimeter - it's your chance! Need more - ask me.
Check out my other lots, I hope you will find something interesting!
Any questions or requirements for detectors and/or electronics? Feel free to contact me.