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Subject:
Re: petri dish fun
From:
Kim Collison <[log in to unmask]>
Reply To:
Informal Science Education Network <[log in to unmask]>
Date:
Thu, 6 Mar 2008 14:40:24 -0600
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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related
> institutions.
>
> *****************************************************************************
>
> .
> You can let them grow in a dry, dark place (like a desk drawer) a
> room temp for about a week and should get wonderfully nasty results!
>

Just be aware that some of those nasty results could be pathogenic and need
to be handled accordingly. At the very least, you need a way to kill the
microbes before disposal


My 11-year-old daughter just finished her science fair project using similar culture techniques (she was testing the antimicrobial effectiveness of UV light).  She decided to construct an "incubator" using a cardboard box (nice and dark), a desk lamp shining on the box for the heat source and a small dish of water to keep the incubator environment moist-ish.  This set up allowed her to achieve a 10 degree Celsius increase over room temp.  We got fantastic growth within 48 hours. We disposed of the dishes by pouring a 10% bleach solution over the agar and letting it sit for 30 minutes or so before throwing the plates away.

Good luck!


Kimberly Collison
Health and Life Sciences Coordinator
417-862-9910 x709

Discovery Center of Springfield
438 E St Louis Street
Springfield MO  65806
www.discoverycenter.org

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