A method and apparatus for analyzing the performance of a data processing system, particularly a distributed data processing system, provide a system user with tools for analyzing an application running thereon. The apparatus comprises a tank with a plurality of compartments. The movement member is capable of moving between a housing position where the movement member is substantially housed inside the developer case and a protruding position where the movement member protrudes beyond the developer case. The length of the second contact is greater than the length of the first contact. The diversion chamber is a pressure reservoir, in which an elevated pressure, compared to the pressure prevailing in the fuel tank, is maintained. The kit can include a handheld diabetes managing device and insulin pump.