Glo Germ™ powder is used to effectively demonstrate how germs are spread through cross contamination.
One easy demonstration is to sprinkle Glo Germ™ powder on a work surface and then wash the surface. Residual "simulated germs" then show up a brilliant white under UV black light. A second demonstration is to sprinkle or brush Glo Germ™ powder on a fruit or vegetable and then cut it up. UV black light will show where the "glowing germs" have been spread from the produce to the knife, cutting board, and hands.