Added: 3 years ago
From: SteveSpanglerScience
Views: 129,551
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  • try colloidal silver as a disinfectant.

  • that so great !!!!

  • thanks helped a lot

  • nice explanation

    

  • we are doing this experiment in class I cant wait

  • ! That mean the keyboard is more contaminated than the bathroom

  • cool one of my family members a long time ago they made up the petri dish and my last name is Petri

  • O.o ok.... Kinda creeped me out..

  • 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!

  • this was a very helpful video :-)

  • he does his inoculations wrong...

  • @ehandkz I know that's what I noticed as well

  • Let's grow mushrooms on our shoes.

  • So you heard him, evryboddy go to the shop to buy a big bubble and go live in it :D

  • No mention of aseptic techniques.

  • @celticslimjim Agreed - he should have divided it in quadrants.  He scribbled his cultures instead of using the quadrant technique. Fail.

  • so coooool

  • YOU RULE AT CHEMISTRY!!!

  • did this with water fountains at school, it was so bad i got sick...

  • @samwise401 Why? That's just the average bacteria that's everywhere, just growing in a visible colony. Nothing's changed except the quantity.

  • lol my friends and i are doing the door to the cafeteria at our school, should be interestinggg :S

  • there are germs everywhere ahahahahahahaha

  • how can you boil the nutrient agar? . . . . and where would you get it?

  • Comment removed

  • I'm glad you did this cause I'm actually doing an experiment similar to this. This really helped me understand how to use and put the bacteria nutrients on the petri dish.

  • @akiriaflower do you know how to boil the agar?

  • Sooooo are some of the micros dangerous....?

  • GOGO IMMUNE SYSTEM, it's like the Crusades being fought every second

  • @Grundalizer I hope is not like the Crusades, they lost you know.

  • GR8888 VIDEO

    

  • what kind of substrate it is...???

  • awsowme

    

  • now we should wash our hands after sitting on computer not after bathroom 

  • im doing this for the science fair :D

  • awesome !!! i enjoyed it !

  • that what im doing too dude

  • myfriend didthis and the basketballs in the gym.......3 types of staff infection X(

  • waw holy mackrel. 2:43

    XD

  • What about the top of the sanitizer bottle. how dirty is that?

  • haha right

  • I wonder how dirty the inside of a hand sanitizer bottle is.

  • @bannedsk8r even better, the push dispenser or lid

  • @toadstoolnews

    I literally just finished my culture of a swab from a sanitizer bottle. Surprisingly clean :/

  • I bet doorknobs are the dirtiest.

  • gggg

  • LoL i did this at home. Disgusting! ~cool.^^

  • i think this is great =0)

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