A composite signal in which pre-pit signal components are piggypacked onto frequency components of wobbling, is extracted from an optical recording medium. The patterned conductive layer includes a copper layer. After their creation, the salts and particulates flow into a brine pool maintained within the chamber. This mixture of urine is not diluted in any manner with that of additional animals or preservatives. One of the outlet conduit and the housing is movable along a direction towards the other of the outlet conduit and the housing.