A mold-release coating system includes a barrier coating of a substantially liquid wax material. The sensor may also include a pixel readout unit for enabling individual pixel values to be readout. The invention may be used, for example, in the screening for nucleic acid sequences which may be indicative of genetic defects or contagious diseases, as well as for monitoring efficacy in the treatment of contagious diseases. The sludge filtration apparatus can prevent thickened sludge from remaining in an upper portion of the filter assembly. The system further comprises a quantification unit for each of said quantification sections.