The invention provides an instant type liquid treating device which comprises a housing with an inlet and an outlet connected by a passage for passing a liquid medium through the device. The device further comprises at least one set of cooperating separate conductive faces connectable to an AC-power supply and directly exposed to each other in the passage such that the liquid medium can be treated by way of its own electrical resistance between the faces. A control is provided to facilitate relative movement of the faces.VER ANEXOS
