SI8B , Pancake Geiger counter, Beta & Gamma Detector. For  Dosimeter, radiometer. NEW (not used),  old stock. Tested
For sale is lot of 1 new Geiger SI8B . Tested.  Not used.


LOT OF 1pc. Si8b geiger tubes NEW Boxed.

Boxed with metal cover and manuals.

Technical Characteristics:


Working Voltage        360-440V
Plateau Inclination  0.3%/V
Max. working current  18.2 mkA
Max. counting speed    3400 pulses/sec
Efficiency of logging Beta   50-85%
Own Background   2 Pulses/s
Diameter 75mm
Working Temperature Range -50 +65 С

Will be well packed and shipped by airmail with tracking number