A product includes a dissolvable dispense indicator carried by a container. As a result, the shielding attenuation of the mounting rack is considerably increased. The result is a simply designed hydraulic cylinder in which the fixing element provided for temporary tying of the piston rod in particular leaves untouched the end of the piston rod facing away from the piston and also does not hinder further the operation of the hydraulic cylinder. The female threads of the lift member can be disengaged from the male threads according to the rotation of the rotary shaft. This process comprises using a sintered oxide comprising an alkali metal element and silica andor alumina as a loading material for preheating of the raw material gas andor as a supporting material for fixation of the position of the catalyst.