The invention relates to a melt filter for purifying, in particular, plastic melts leaving extruders, comprising a filter disk, which is provided between two plates that form a housing equipped with a filter element changing station, and which can be rotationally driven by means of a power-operated pawl-type drive. An analyzer is provided for analyzing spatial andor optical properties of one or more data signals in one or more wavelength ranges. The conductive layer is disposed on one surface of the film to extend in a first area, a second area and a third area of the film. The receiver includes the TSN in the corresponding Block Ack response. The present invention also provides for a method of treating a disease such as cancer, by delivering to a patient a therapeutically effective amount of POH-Rolipram. In an event when the testing is accidentally interrupted, the tester can produce auto-recovery data according to the testing data saved in the real-time accessing module, and continue testing, based on the auto-recovery data, from the chip being last but incompletely tested.