The development of a research methodology for the gas phase of the electric explosion of conductors L. I. Urutskoev, D. V. Filippov, A. O. Biryukov, K. A. Alabin Moscow State University of Printing Arts, 2A Pryanishnikov str., Moscow, 127550, Russia E-mail: urleon@yandex.ru A. A. Rukhadze A. M. Prokhorov General Physics Institute, Russian Academy of Sciences 38 Vavilova str., Moscow, 119991, Russia E-mail: rukh@fpl.gpi.ru A. A. Markoliya Sukhum Institute of Physics and Technology 665 Kodorskoe highway, Sukhum, 384914, RA T. V. Shpakovsky, G. K. Steshenko, A. A. Levanov, P. V. Belous Moscow Institute of Physics and Technology 9 Institutskiy al., Dolgoprudny, Moscow region, 141700, Russia The article describes methods for determining the chemical composition of the gas produced as a result of the high-current electrical explosion of tungsten wire. <...> Described in detail methodology of measuring the amount of particles with mass m = 4 u, detected in the chamber after the electric blast. <...> Discussed possible sources of measurement error, and results of verification experiments are shown. <...> Presented the results of measurements of time dependences of pressure and amount of particles m = 4 u, whose behavior were quite unexpected. <...> PACS: 52.80.Qj, 07.30.-t, 07.75.+h, 52.70.Nc Keywords: electric exposion of wire, chemical composition of gas, helium, mass spectrometer, tungsten, gas methodology, weak nuclea. <...>