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Keeping It Clean: A Lesson Plan on Aseptic Technique

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Keeping It Clean (continued) + ward ' s science 5100 West Henrietta Road • PO Box 92912 • Rochester, New York 14692-9012 • p: 800 962-2660 • wardsci.com Find materials for this activity at wardsci.com. Discover more free activities at wardsworld.wardsci.com Follow-up: • How successful were you at keeping the medium inside your Petri dish free from contamination? How would you change your technique so that you would be less likely to contaminate materials next time? • What areas on your equipment did you expect would become contaminated while you were working? • Did you contaminate your work area? • How do you think you could measure the amount of contamination you had on any single tool or surface (e.g., the handle of your swab)? • How do you think your results would be affected if multiple people in the lab shared equipment? Disposal/Clean-up: • Dispose of chemicals according to local regulations. • Put all materials into the trash, wipe your work surface with disinfectant again and wash hands.

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