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Bacteriology Science Fair Project

Killing Bacteria with Disinfectants

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Killing Bacteria with Disinfectants | Science Fair Projects | STEM Projects
We're testing different disinfectants to see which one kills bacteria the most effectively. We'll measure the results to see which one works the best.

Hypothesis

The hypothesis is that bleach will work the best in killing the bacteria.

Method & Materials

You will culture several species of bacteria, add disinfectant to the bacteria, spread the mixture on a nutrient agar plate, and incubate overnight.
You will need 40 microliters of each type of bacteria, 60 microliters of each type of disinfectant, 30 nutrient agar plates, 30 sterile loops, 30 sterile tubes, 1 pipette, and 1 incubator.

Results

The results indicate that bleach worked the most effectively to kill bacteria. This stands out because it is an oxidant, which is a powerful disinfectant.

Why do this project?

This science project is interesting because it helps us to understand which disinfectant is the most effective in killing bacteria.

Also Consider

Variations to consider include testing different types of bacteria and testing different concentrations of disinfectant.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!
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