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WebSep 5, 2009 · Black light test reveals kids can still spread germs after washing their hands. By YUNJI DE NIES, TRACEY MARX and BEN KROLOWITZ September 5, 2009, 5:22 PM Sept. 6, 2009 -- With many students back in school, and H1N1 flu fears on the rise, messages to kids to wash up are everywhere. WebHead of Lettuce – Powder Experiment #1: To show the way bacteria spreads by cross-contamination, use an unwashed head of lettuce and the bottle of Glo Germ™ powder to thoroughly coat the lettuce in ‘germs.”. 1. Sprinkle the powder onto the head of lettuce, getting in between the leaves and on the outside. Spread the powder around a ... new photo for driving licence
Good Hand Washing? Turn on the Black Light! - Science …
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