SI-13G Geiger-Muller. For the radiometer dosimeter. Military acceptance 1969

Description

The presence of an asterisk on the flask indicates that the product is made for the military.
Year of military acceptance in 1969. Radiation detector with a stamp in the form of a star is quite rare.
SI-13G / СИ-13Г Geiger Muller Counter Tube Gamma Radiation Detector NEW,
Old stock.
SI-13G Geiger Muller counter tube designed for Gamma radiation registration.
SI-13G is used in dosimeters for measurements.
If you have any questions, feel free to contact me.
I ship with tracking number.
Beginning of the counting voltage - 290V-330V.
Working Voltage - 360V-440V.
Plateau length - at least 80V.
Plateau slope - not more than 0.25%/V.
Counter sensitivity at 1µR/sec irradiation - at least 7imp/sec.
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