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Death Rays: What Duration of Ultraviolet Exposure Kills Bacteria?

5 Items
Death Rays: What Duration of Ultraviolet Exposure Kills Bacteria? is rated 4.2 out of 5 by 37.
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$6.30 - $21.75Qty 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 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
Rated 4 out of 5 by from Practical but some plates were damaged. I used these plates for my after school program. They worked very well. Just a couple of things to keep in mind if you are considering buying it. 1) the only option of shipping is 2-day, so that will add up to your total. 2) out of the 3 packs I used, 3 plates were unusable: one had a crack, one had some unidentified object in the agar, and one was contaminated. However, overall is a good product.
Date published: 2016-09-02
Rated 5 out of 5 by from Good and Reliable Product Very good product. I have ordered this product multiple times for my research and it has never let me down. Also is shipped very quickly with safe and secure packaging. 10/10 would inoculate again.
Date published: 2016-04-17
Rated 1 out of 5 by from I AM OUTRAGED! I ordered this product and many others for my science fair project. I spent over 120$ which has been flushed completely down the drain because the bacteria did not grow. I used the bacteria the same day that it arrived at y doorstep so there is no way that it went bad. I have retried the experiment several times and the bacterial has still failed to grow. My project is due in a few weeks and it is too late to change my topic so i will receive a failing grade. I am HIGHLY DISSATISFIED with this product AND company.
Date published: 2016-02-20
  • y_2017, m_7, d_18, h_22
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_5, tr_32
  • loc_en_US, sid_P_SB_FAM_UVEXPOS, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_carolina
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 18ms
  • REVIEWS, PRODUCT