An apparatus for making pharmaceutical nitric oxide gas comprising: an enclosure defining a reactor chamber having a gas inlet port and a gas outlet port, the inlet port adapted to receive an air flow, and, the gas outlet port adapted to discharge a gas flow; a tape constructed from: a porous hydrophilic polymer substrate having pores, an average pore size, and, a substrate thickness, and, a particulate reductant disposed within the pores and on a surface of the tape forming a film, the particulate reductant having an average particle size, and, the film having a surface density of particulate reductant and a film thickness, the tape disposed within the reaction chamber, and, the tape wound around first and second cylinders of a spooling mechanism, the spooling mechanism adapted to spool the tape within the reaction chamber; and, a liquid pulsing device adapted to pulse liquid droplets of a liquid source comprising water, NO 2 -, viscosity agent, and, non-detergent surfactant onto the tape generating pulses of the nitric oxide gas, wherein the reductant comprises one or more compounds selected from the following structures: (croconic acid), (p-toluenesulfonic acid), and (2,3,5,6-tetrafluoromandelic acid). an enclosure defining a reactor chamber having a gas inlet port and a gas outlet port, the inlet port adapted to receive an air flow, and, the gas outlet port adapted to discharge a gas flow; a tape constructed from: a porous hydrophilic polymer substrate having pores, an average pore size, and, a substrate thickness, and, a particulate reductant disposed within the pores and on a surface of the tape forming a film, the particulate reductant having an average particle size, and, the film having a surface density of particulate reductant and a film thickness, the tape disposed within the reaction chamber, and, the tape wound around first and second cylinders of a spooling mechanism, the spooling mechanism adapted to spool the tape within the reaction chamber; and, a liquid pulsing device adapted to pulse liquid droplets of a liquid source comprising water, NO 2 -, viscosity agent, and, non-detergent surfactant onto the tape generating pulses of the nitric oxide gas, wherein the reductant comprises one or more compounds selected from the following structures: (croconic acid), (p-toluenesulfonic acid), and (2,3,5,6-tetrafluoromandelic acid). a porous hydrophilic polymer substrate having pores, an average pore size, and, a substrate thickness, and, a particulate reductant disposed within the pores and on a surface of the tape forming a film, the particulate reductant having an average particle size, and, the film having a surface density of particulate reductant and a film thickness, the tape disposed within the reaction chamber, and, the tape wound around first and second cylinders of a spooling mechanism, the spooling mechanism adapted to spool the tape within the reaction chamber; and, a liquid pulsing device adapted to pulse liquid droplets of a liquid source comprising water, NO 2 -, viscosity agent, and, non-detergent surfactant onto the tape generating pulses of the nitric oxide gas, wherein the reductant comprises one or more compounds selected from the following structures: (croconic acid), (p-toluenesulfonic acid), and (2,3,5,6-tetrafluoromandelic acid).