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Death Rays: What Duration of Ultraviolet Exposure Kills Bacteria?

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Death Rays: What Duration of Ultraviolet Exposure Kills Bacteria? is rated 4.2 out of 5 by 40.
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$6.45 - $21.95Qty Discount Available View Details

In this Science Buddies science project, you will observe the effects of short-term ultraviolet light exposure on bacteria. You can customize this experiment to include the nutrient agar plates, living K-12 E. coli, a glass spreader, and other supplies.

 
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Ultraviolet light can damage DNA molecules. If a cell's DNA repair mechanisms can't keep up with the damage, mutations are the result. As harmful mutations accumulate, the cell eventually dies. How much ultraviolet light is too much for a bacterial cell?

View the full project, background information, procedures, and more at ScienceBuddies.com

 
 
 
 
Rated 4 out of 5 by from Grew very well I got the vial in good shape, left it overnight, and was able to get really great growth. Just using a cotton swab produced fairly small colonies but using an innoculating hook spread out the bacteria and I was able to get almost full coverage. I’d definitely recommend.
Date published: 2018-02-17
Rated 4 out of 5 by from Exactly what we ordered We purchased this for a science fair project. It arrived exactly when expected and was exactly what we ordered.
Date published: 2018-02-01
Rated 4 out of 5 by from Great results ! We used this for a middle school experiment . It was very easy to use and without any mess. It would have been nice to include clear instructions for storage of the product - we refrigerated it briefly by mistake but it still worked out.
Date published: 2018-01-20
Rated 1 out of 5 by from the product was contaminated with bacterias the product was contaminated with bacteria. The customer service told me they will reimburse the money and I'm still waiting.
Date published: 2017-06-05
Rated 5 out of 5 by from Great for science fair Ordered these for son's 8th grade science fair project. Arrived exactly at time promised. Stored in refrigerator until ready to use. Plate inoculation was easy. Incubated in basement. Grew beautiful (actually disgusting!) specimens in a few days. Son was amazed and fascinated. Science fair conquered!!
Date published: 2017-03-09
Rated 5 out of 5 by from Works like a charm The bacteria came in a test tube perfect for science experiments and worked just as advertised. Love it!
Date published: 2017-02-12
Rated 4 out of 5 by from Easy to use and perfect for student micro projects Trying to teach students the proper method for making agar dishes can be difficult. At times when they make their own the agar is lumpy and uneven, making it difficult to observe. The only suggestion I would make is order more than you need because the plastic on the dishes is fairly thin and on every purchase I have made, typically at least one dish is cracked and cannot be used. Other than that these are so much easier than preparing your own.
Date published: 2016-12-23
Rated 5 out of 5 by from Good Strain of E.coli that grows Bought this product for a very important research paper for my school and everything went smoothy. Received the product in good packaging and nothing was leaking. The bacteria grew successfully and I did not encounter any problems with it.
Date published: 2016-09-03
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  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.7
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  • clientName_carolina
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  • REVIEWS, PRODUCT