NOVELTY - Controlling the generation of hydrogen gas from a metal borohydride solution includes immersing a catalyst (14) strip containing an organic pigment including pyranthrenedione, indanthrene gold orange, ditridecyl-3,4,9,10-perylenetetracarboxylic diimide, indanthrene black, dimethoxy violanthrone, 1,4-diketopyrrolo-3,4C pyrrole, quinacridone, indanthrene yellow, 3,4,9,10-perylenetetracarboxylic dianhydride, isoviolanthrone, or perylenetetracarboxylic diimide, in the form of a solid, loose powder immobilized on a substrate.    USE - Method for controlling the generation of hydrogen gas from a metal borohydride solution with organic pigment catalysts (claimed).    ADVANTAGE - The method uses low-cost, safe and stable hydrogen-rich borohydride solution in combined with organic pigment catalysts.    DETAILED DESCRIPTION - Controlling the generation of hydrogen gas from a metal borohydride solution comprises:    (A) selecting a hydrogen-rich borohydride;    (B) adding the borohydride to an aqueous alkaline solution;    (C) stabilizing the borohydride in the aqueous alkaline solution;    (D) maintaining the temperature of the solution above the freezing point and below the vaporization point of the solution;    (E) immersing a catalyst strip containing an organic pigment including pyranthrenedione, indanthrene gold orange, ditridecyl-3,4,9,10-perylenetetracarboxylic diimide, indanthrene black, dimethoxy violanthrone, 1,4-diketopyrrolo-3,4C pyrrole, quinacridone, indanthrene yellow, 3,4,9,10-perylenetetracarboxylic dianhydride, isoviolanthrone, or perylenetetracarboxylic diimide, in the form of a solid, loose powder immobilized on a substrate including ceramics, cements, glass, zeolites, perovskites, fibers, fibrous material, mesh, polymeric resin or plastic, where the catalyst strip is manipulated so that an immersion depth of the catalyst into the borohydride solution is varied to expand the total area to perform the hydrogen-gas evolving borohydride decomposition reaction which is borohydride ion (BH4-) plus 2 moles of water producing borate ion (BO2-) plus 4 moles of hydrogen;    (F) increasing the rate of decomposition of the metal borohydride into hydrogen gas and a metal salt; and    (G) directing the hydrogen gas to an operably connected, hydrogen-consuming device including fuel cell, combustion engine, and/or gas turbine.    An INDEPENDENT CLAIM is included for a hydrogen gas generation device comprising:    (A) a container for an alkaline solution having an inlet for borohydride tablets that dissolve to form a borohydride solution;    (B) an immobilized organic pigment catalyst fastened on the end of an armature which is manipulated so that the immersion depth of the catalyst into the borohydride solution is varied to expand the total area that is performing the hydrogen gas evolving borohydride decomposition reaction, and    (C) an outlet for hydrogen gas produced from the organic pigment catalyzed reaction.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a hydrogen gas generation device.    Plunger (11)    Electrode (12)    Pressure Gauge (13)    Catalyst (14)    Armature (15)