A reservoir assembly for containing a non-corrosive liquid and a gas containing an evaporated liquid. The reservoir assembly includes a main reservoir having a main reservoir bottom wall, a main reservoir top wall and a main reservoir peripheral wall extending therebetween. An auxiliary reservoir, is provided having an auxiliary reservoir bottom wall and an auxiliary reservoir peripheral wall extending therefrom defining a peripheral wall top edge. The auxiliary reservoir located inside the main reservoir with the auxiliary reservoir peripheral wall adjacent the main reservoir peripheral wall to allow an infiltration of the non-corrosive liquid therebetween when the auxiliary reservoir is filled and the non-corrosive liquid overflows over the peripheral wall top edge. A deflector, is mounted inside the main reservoir to the main reservoir peripheral wall, having a deflector free end located above the auxiliary reservoir.