Apparatus configured for chemiluminescence and/or fluorescence measurement, comprising a photomultiplier device configured for receiving and measuring a photo-emission of a reaction cup, comprising: - a reading unit module comprising said photomultiplier device, configured to read said chemiluminescence and/or fluorescence emitted by said reaction cup; - a sliding cartridge module, configured to contain said reaction cup; - a first sliding arrangement for sliding said cartridge module into a first sliding direction and configured to stop said sliding cartridge module to locate said reaction cup in turn at a reaction cup placing position, a reading and injector position, a liquid extraction position and a reaction cup releasing position; - an injector module, configured to inject reaction agents into said reagent cup when said sliding cartridge module is in said reading and injector position, and to extract liquid from said reagent cup when said sliding cartridge module is in said liquid extraction position; - a second sliding arrangement for sliding said injector module into a second sliding direction substantially perpendicular to said first sliding direction, to ensure consistency of relative position between said injector module and said reaction cup; - a shifting fork module, configured to be in a shut state to hold said reaction cup in said sliding cartridge module or to be in an open state to let drop said reaction cup from said sliding cartridge module when in said reaction cup releasing position; - a shield module configured to envelope said apparatus completely, and comprising a first hole to let said reaction cup enter said sliding cartridge module when in said reaction cup placing position, and a second hole to let said reaction cup drop when said sliding cartridge module is in said reaction cup releasing position; - a light block module, configured to close said first and second hole (52, 53) when said sliding cartridge module is neither in said reaction cup placing position nor in said reaction cup releasing position. - a reading unit module comprising said photomultiplier device, configured to read said chemiluminescence and/or fluorescence emitted by said reaction cup; - a sliding cartridge module, configured to contain said reaction cup; - a first sliding arrangement for sliding said cartridge module into a first sliding direction and configured to stop said sliding cartridge module to locate said reaction cup in turn at a reaction cup placing position, a reading and injector position, a liquid extraction position and a reaction cup releasing position; - an injector module, configured to inject reaction agents into said reagent cup when said sliding cartridge module is in said reading and injector position, and to extract liquid from said reagent cup when said sliding cartridge module is in said liquid extraction position; - a second sliding arrangement for sliding said injector module into a second sliding direction substantially perpendicular to said first sliding direction, to ensure consistency of relative position between said injector module and said reaction cup; - a shifting fork module, configured to be in a shut state to hold said reaction cup in said sliding cartridge module or to be in an open state to let drop said reaction cup from said sliding cartridge module when in said reaction cup releasing position; - a shield module configured to envelope said apparatus completely, and comprising a first hole to let said reaction cup enter said sliding cartridge module when in said reaction cup placing position, and a second hole to let said reaction cup drop when said sliding cartridge module is in said reaction cup releasing position; - a light block module, configured to close said first and second hole (52, 53) when said sliding cartridge module is neither in said reaction cup placing position nor in said reaction cup releasing position.