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Topics  > Microbiology > Bacteriology

Concentration of disinfectant and survivability of bacteriaFeatured science projectScience project video
Observation

The results obtained in this experiment are recorded in the table as below.

Concentration of disinfectant (%) Diameter of zone of inhibition (cm)
10 5
20 4
30 6.5
40 5
50 7
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Print
Complexity level:
5
Project cost ($):
180
Time required:
1 hour to prepare. Incubation period of 24 hours. 10 minutes for observation.
Material availability:
All of the materials mentioned should be available at the school laboratory.
Safety concerns:

Students should wear gloves and goggles at all times to prevent infection as they are dealing with microorganisms. Adult supervision is highly encouraged.

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