An apparatus for evaporating liquid samples contained in sample holders mounted within a chamber and by rotated by the rotor during an evaporation process in which the pressure in the chamber is reduced below atmospheric and the sample holders are rotated at high speed so as to exert centrifugal force on the contents of the holders. The communication interface device includes a low voltage power line as well as telecommunications and wireless interfaces. The trap includes an odor controlling substance dissolvable in the aqueous dispersion medium, a cage having a receiving portion for housing the odor controlling substance, and a fastening portion for mounting the cage to the interior of the trap. A second ball lens is coupled to the housing and is also positioned relative to the filter and optical fibers to selectively collimate and focus the optical signals. Stator vanes are provided for connecting the central body to the outer casing and to remove any swirl velocity from the fluid flow exiting the mixed flow pump impeller. Material is extracted from each of a plurality of live eggs, the extracted material is assayed to identify eggs having the characteristic, and then eggs identified as having the characteristic are processed accordingly.