Method of production of thin, transparent and electrically conductive graphene layer comprising preparation of aqueous suspension of graphite oxide, filtration of prepared aqueous suspension of graphite oxide through a porous polymer filter using a filtering equipment, wherein during the filtration process the nanoparticles of graphite oxide are deposited on surface of the porous polymer filter and forms a thin layer of graphite oxide, which is washed, dried and reduced with reducing agent to graphene, the obtained layer of graphene is washed to remove remains of the reducing agent and dried, characterised in that the porous polymer filter is a polycarbonate membrane filter through which the aqueous suspension of graphite oxide is filtered into an alkaline media, preferably into 0,1 M KOH solution, wherein the filtering equipment used in filtration process comprises: a glass cylinder for the aqueous suspension of graphite oxide to a bottom of which is attached the polycarbonate membrane filter and a beaker for alkaline media, whereas preparation of the filtering equipment for filtration and carrying out the filtration process comprises the steps of: - placing the glass cylinder into the beaker with an alkaline media, preferably with 0,1 M KOH solution, in such a manner that polycarbonate membrane filter is immersed into alkaline media, - placing aqueous suspension of graphite oxide into the glass cylinder, - maintaining the horizontal position of the polycarbonate membrane filter, - equalizing a level of the aqueous suspension of graphite oxide inside the glass cylinder with a level of the alkaline media inside the beaker, - leaving such prepared filtering equipment for a duration of filtration process, of 1 h, after that time, sucking of the alkaline media from the beaker is performed until the level of the alkaline media inside the beaker and the level of the aqueous suspension of graphite oxide inside the glass cylinder will equalized at the polycarbonate membrane filter level, than suction procedure is interrupted and the glass cylinder with the thin layer of the graphite oxide formed on the surface of the polycarbonate membrane filter is removed from the beaker. a glass cylinder for the aqueous suspension of graphite oxide to a bottom of which is attached the polycarbonate membrane filter and a beaker for alkaline media, whereas preparation of the filtering equipment for filtration and carrying out the filtration process comprises the steps of: - placing the glass cylinder into the beaker with an alkaline media, preferably with 0,1 M KOH solution, in such a manner that polycarbonate membrane filter is immersed into alkaline media, - placing aqueous suspension of graphite oxide into the glass cylinder, - maintaining the horizontal position of the polycarbonate membrane filter, - equalizing a level of the aqueous suspension of graphite oxide inside the glass cylinder with a level of the alkaline media inside the beaker, - leaving such prepared filtering equipment for a duration of filtration process, of 1 h, after that time, sucking of the alkaline media from the beaker is performed until the level of the alkaline media inside the beaker and the level of the aqueous suspension of graphite oxide inside the glass cylinder will equalized at the polycarbonate membrane filter level, than suction procedure is interrupted and the glass cylinder with the thin layer of the graphite oxide formed on the surface of the polycarbonate membrane filter is removed from the beaker. - placing the glass cylinder into the beaker with an alkaline media, preferably with 0,1 M KOH solution, in such a manner that polycarbonate membrane filter is immersed into alkaline media, - placing aqueous suspension of graphite oxide into the glass cylinder, - maintaining the horizontal position of the polycarbonate membrane filter, - equalizing a level of the aqueous suspension of graphite oxide inside the glass cylinder with a level of the alkaline media inside the beaker, - leaving such prepared filtering equipment for a duration of filtration process, of 1 h, after that time, sucking of the alkaline media from the beaker is performed until the level of the alkaline media inside the beaker and the level of the aqueous suspension of graphite oxide inside the glass cylinder will equalized at the polycarbonate membrane filter level, than suction procedure is interrupted and the glass cylinder with the thin layer of the graphite oxide formed on the surface of the polycarbonate membrane filter is removed from the beaker.