A one-size-fits-all pan configured for supporting a fluid-producing unit. The substrate has a first surface and a second surface opposite the first surface. By eliminating the extra step of swabbing a document, the efficiency of sample detection is improved, sample detection is performed more rapidly, and operating costs of sample detection are decreased. The torque converter hub extends beyond the pump rotor to fluidly seal the pump rotor from the annular chamber between the torque converter hub and the stator shaft.