The Dirt on Soap

Overview

Objectives/Goals The objective of my project was to find out if antibacterial soap works more effectively at eliminating bacteria than non-antibacterial soap. Methods/Materials Using both the antibacterial and non-antibacterial soaps, I grew bacteria on sterilized petri-dishes with agar. The materials I used were: antibacterial hand soap, non-antibacterial hand soap, nutrient broth (bacteria food), agar powder(beef extract & gelatin growth medium), petri-dishes, autoclave(pressure-cooker), laminar flow hood, beef broth, latex gloves, incubator, rubbing alcohol, water, beakers, eye-droppers, pipette, spray bottle, and test tubes. Results My results showed that there was no difference in the effect of eliminating bacteria between antibacterial and non-antibacterial handsoaps. Conclusions/Discussion My results showed that antibacterial and non-antibacterial soaps had an equal effect. I discovered that "antibacteria" is only a name that makes soaps sell better, because in reality, anitbacterial soaps do not work any better than non-antibacterial soaps at eliminating bacteria.

Competition history

• CSEF 2009 Product Science (Biological) (Junior Division Only) · Entry J2121

Resources

• CSEF project summary ↗

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