An apparatus for use as an ion source for mass analysis includes a nebulizing device, a vaporizing device, a chamber, an ion sampling structure, and an ionizing device. The leg rest assembly progressively elevates into a leg-supporting position during a subsequent recline motion as the back rest assembly and seat pan assembly progressively recline towards a lie-flat configuration. The tubular jacket and the lifting cylinder unit are air-tightly connected to one another and form a compressed air storage chamber between the inner wall of the tubular jacket and the outer wall of the lifting cylinder unit. A motivator is operationally coupled to the conveyor wherein the conveyor is configured for moving an object on the conveyor from the first end of the conveyor towards the second end of the conveyor.