Dial Soap Bacteria Science Fair Projects

Test bacteria on any surface with the Surface Microbes Science Fair Projects Kit: after hand sanitizer, hands, disinfectant.. for example. You can use antibiotics to test the bacteria too.

Anytime you want to test how many bacteria are On Top of a surface like a desk, skin, chicken, computer keyboard, bread dough, a hard piece of chocolate, cheese, inside of an animal's cheek, etc. then use the surface experimenter kit. The kit will let you calculate how many bacteria there are per unit surface area on the object. You can also test for e-coli, however, only the microbe water kit will let you distinguish e. coli from other coliforms and bacteria.

Soap

Soap is a cleaning product. It works through chemical reactions and molecular interactions.

Objectives/Goals

My objective was to determine which type of the following liquid antibacterial soap would kill the most bacteria: Dial, SoftSoap, or Target soap. My hypothesis was that Dial would kill the most bacteria.

Methods/Materials

I used 10 petri dishes that were split into three parts, where I poured agar solution into each part of the petri dishes. I allowed the agar to dry before I planted Micrococcus luteus, which is a common skin bacteria. Afterward, I placed the petri dishes into a homemade incubator.

Results

SoftSoap killed the most bacteria. It killed 59% of the bacteria, while Dial and Target soap killed 53% of the bacteria.

Conclusions/Discussion

My conclusion was that my hypothesis was incorrect and SoftSoap killed the most bacteria. However, all the antibacterial soaps that I used killed only a certain amount of the skin bacteria but they did not eliminate all of the bacteria. 3rd party contributor