In conjunction with the Ultrasnap and Aquasnap testing devices, SystemSURE Plus measures adenosine triphosphate (ATP), the universal energy molecule found in all animal, plant, bacteria, yeast and mold cells. Residues, particularly food or organic residue, contain large amounts of ATP. When left on a surface, residues can harbor and grow bacteria, cause cross-contamination, develop biofilm and many other problems that can compromise product quality. Microbial contamination contains ATP, but in small amounts. After cleaning, all sources of ATP should be significantly reduced. When ATP is brought into contact with Hygiena’s unique, liquid-stable luciferase/luciferin reagent in the Ultrasnap or Aquasnap testing device, light is emitted in direct proportion to the amount of ATP present. The system measures the amount of light generated and provides information on the level of contamination in just seconds. The higher the reading, the more contamination present.