TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The solid reactant is a compacted pill of sodium borohydride. The liquid reactant is water.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The interior volume is occupied by the reaction area, liquid storage area and product collection area. The fuel supply further comprises: a second barrier that encloses the solid reactant, so that the second barrier collapses as reaction components are produced; a liquid dispenser that pumps the liquid reactant from the liquid storage area into the reaction area, where the liquid dispenser includes a nozzle through the second barrier through which liquid reactant is pumped into the reaction area; a flexible channel, where the product collection area is fluidly coupled to the reaction area by the flexible channel; a third barrier that encloses the product collection area, where the third barrier expands as the product collector area increases; a liquid dispenser that pumps the liquid reactant from the liquid storage area into the reaction area, so that the liquid reactant reacts with the solid reactant to produce reaction components; and a biasing mechanism that substantially envelops the reaction area, the solid reactant includes a helix channel disposed around the solid reactant that guides the reaction composition to the product collection area, the liquid dispenser includes an inlet fluidly coupled to the liquid storage area, an outlet fluidly coupled to the reaction area, and a diaphragm in fluid communication with the inlet and outlet, where the diaphragm reciprocates to pump the liquid reactant from the liquid storage area to the reaction area and the product collection area further includes an open cell foam that significantly adsorbs the reaction components. The container includes a product outlet fluidly coupling the interior volume to the exterior of the container. The reaction area further includes a biasing mechanism that biases the solid reactant toward the pumped liquid reactant, where the biasing mechanism encloses the solid reactant so that the biasing mechanism collapses as the reaction components are produced. The second barrier is an elastic membrane that envelopes the solid reactant. The fuel solid reactant includes a reaction product path that moves reaction products to the product collector, where the reaction product path consists of one channel disposed on a surface of the solid reactant, one channel disposed through the solid reactant, one helix channel disposed around the solid reactant, a contained region disposed around the solid reactant or one conduit abutting the solid reactant. The reaction area is contained in the liquid storage area, where the liquid storage area is contained in the product collection area. The reaction components include a liquid component, a solid component, and a gaseous component, where the product collection area includes a product filter that adsorbs the liquid and solid components. The product filter comprises of a series of open-cell foams with different pore sizes, where the pore sizes of the foams decrease with increasing distance from the flexible channel. The barrier is a bag enclosing the liquid storage area. The liquid dispenser comprises an inlet fluidly coupled to the liquid storage area, an outlet fluidly coupled to the reaction area, and a surface in fluid communication with the inlet and outlet, where the surface moves to pump the liquid reactant from the liquid storage area to the reaction area. The liquid storage area is under vacuum. The liquid dispenser inlet is a tube in the liquid storage area, where the tube is fluidly coupled to a flexible plastic thread with a length as long as the longest dimension of the liquid storage area and a diameter substantially smaller than the length of the tube. The surface is a flexible diaphragm that reciprocates to pump the liquid reactant. The container is rigid. The fuel supply is coupled to a fuel cell. In the fuel supply (II), the internal volume is defined by the interior walls of the container. The liquid dispenser further comprises of a first valve fluidly coupled to the inlet and a second valve fluidly coupled to the outlet. The fuel supply further comprises a second barrier within the first volume that separates the liquid storage area and the reaction area, where the second barrier moves with the first barrier to inversely vary the first volume and the product collection volume as the reaction components flow into the product collection volume. The barrier is a bag enclosing the first volume that collapses as reaction components flow into the product collection volume. In the fuel supply (II), a second volume includes a series of open-cell foams with different pore sizes, where the pore sizes of the foams decrease with increasing distance from the fluid couple with the first volume. The second volume further includes a hydrogen gas separator fluidly coupled to the product outlet. The foam expands and adsorbs reaction components as the reaction components flow into the product collection volume. The product filter comprises of open-cell foam, where the foam pore size is small in the compressed state and expands to a significantly larger pore size in the expanded state.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The product filter is nylon foam. The product filter further comprises a hydrogen gas separator, where the hydrogen gas separator is made of expanded polytetrafluoroethylene.