Disclosed are a device and method for improved interfacing of differential mobility spectrometry or field asymmetric waveform ion mobility spectrometry analyzers of substantially planar geometry to subsequent or preceding instrument stages. A first guide rail is provided at a frame of the main body to guide the photoreceptive unit which enters through the entrance and descends. The rigid foamed plastic carrier plate is provided with a pore-free sealed surface that facilitates sterilization. Each elongate member extends through the tubular member and has a proximal end attached to the handle and a distal end attached to the end effector assembly. The crude product has an MCR content of at most 90% of the MCR content of the crude feed.