Its effectiveness was demonstrated with reducing 1 to 2 logs of Salmonella in fine and crude nutrition powders. The system employs UV flash lamp and a clear quartz processing chamber, both encircled by a reflector. A batch processing was in place by cycling powder samples of 40 g through this system x4 times each. No visible damage for powders was observed. Results confirmed that the sterilization of powders strongly depends on sizes of its granules: 1 and 2 logs were reached respectively for fine and crude powders at the same number (16) of identical 80 J pulses from a 40 cm long flash lamp. Powder grains were respectively about 50 and 100 microns. The system can be used for developing industrial powder sterilization processes. SteriBeam is capable to build also full scale systems of this type.