FIELD: geophysical prospecting. SUBSTANCE: device has protection housing, generator of radon, saturation chamber, inert gas source, vacuum pump, adsorber. Saturation chamber is air-tight and provided with heater. The chamber is connected with distant system for preparations unloading. There is a casing provided with removable dishes for tablets inside the system. Specific design of the device permits to produce radon preparations in solid form. EFFECT: reduced losses of radon. 2 cl, 3 dwg
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