FIELD: measurement technology. SUBSTANCE: device to take samples in vaporous state has capillary leak produced from dielectric material coupled with one end to source of liquid and to evaporation chamber and with the other end installed inside evaporation chamber, flow governor manufactured in the form of pair of electrodes, flat one concentrically embracing outlet end of leak and needle one mounted on continuation of geometric axis opposite to outlet hole of leak. Given electrodes are linked to controlled voltage source. EFFECT: enhanced authenticity of sample taking. 3 cl, 5 dwg, 1 tbl
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