(STS-5 / STS5 / СТС-5 (an. SBM-20, SI22G, M4011). SBM-20, SI22G, M4011 ) for ionizing radiation detection. Purpose of Use Geiger Muller Tube Counters STS-5 / STS5 / СТС-5 (an. SBM-20, SI22G, M4011 ) are widely used for radiation detection.
eBay