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Science Buddies: "Ask an Expert" • Measuring Bacteria against Disinfectants
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Measuring Bacteria against Disinfectants

Posted: Thu Jun 09, 2022 12:36 pm
by FAMBAMscience6
Good afternoon,

I would like to do a science project where I measure the amount of bacteria that is left on a cutting board after cutting chicken and then I'd like to spray different disinfectants or cleaning products on the cutting board and compare which product disinfects the cutting board best.

How can I measure the bacteria on the cutting board (before and after a disinfectant) and how can I tell if a disinfectant is working against the bacteria. I am trying to figure out the most accurate way to get results.

Thank you for you help and time!

Re: Measuring Bacteria against Disinfectants

Posted: Mon Jun 13, 2022 12:31 pm
by JaquelineP12
hi famba,

you can the measure bacterial by growth is you put your sample on a clear glass plate under a microscope and count how many bacteria cells there are. you can also measure turbidity, which is the amount of bacteria in your sample.



heres more information on it

https://www.wikihow.com/Measure-Bacteri ... r%20sample.



hope i help let me know!!

Re: Measuring Bacteria against Disinfectants

Posted: Tue Jun 14, 2022 3:10 pm
by koneill18
Hello!

Science Buddies has a project guide that includes a detailed explanation of how to measure the amount of bacteria on a cutting board before and after disinfecting it! Here's the link: https://www.sciencebuddies.org/science- ... tants-work'

Let us know if you have any more questions about the procedure!

Re: Measuring Bacteria against Disinfectants

Posted: Tue Jun 28, 2022 3:20 pm
by FAMBAMscience6
Thank you very much to both of you. I appreciate your help and time!