Microbial cells, free ATP and food residues are picked up from surfaces or liquids using N-Light™ swabs BP provided together with the test tubes. The swab samples are broken into the assay buffer in the test tubes which contains a lysis agent for efferent release ATP from microbial cells. Then the reagent tablet in the cap is released and luminescence is measured after 10 sec. Light is generated by the reaction of ATP with the enzyme luciferase and the co-substrate D-luciferin.
