Growing Bacteria - Petri Dish
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try colloidal silver as a disinfectant.
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that so great !!!!
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thanks helped a lot
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nice explanation
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we are doing this experiment in class I cant wait
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! That mean the keyboard is more contaminated than the bathroom
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@ehandkz I know that's what I noticed as well
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cool one of my family members a long time ago they made up the petri dish and my last name is Petri
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O.o ok.... Kinda creeped me out..
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In order for this to have any validity, it needs to be a sterile petri dish and he shouldn't be breathing all over the agar---there are many things wrong with this demonstration! Use this video only if you want students to point out what he did incorrectly--only then is it useful!
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What about the top of the sanitizer bottle. how dirty is that?
toadstoolnews 2 years ago 48
i think this is great =0)
babykat89108 2 years ago 21