- Enough materials to make 20 Agar Plates
- 2 bottles of nutrient agar, 20 (plastic) petri dishes, 20 sterile swabs
- Microwave agar on low until melted, then pour into sterile petri dishes.
- Science Fair Information, Scientific Method Information included
- Detailed Instructions Included
Petri Dishes with Agar and Swabs - Science Fair Project Kit
|Price:||$32.99 + $8.50 shipping|
Specifications for this item
|Brand Name||Science Stuff, Inc.|
|Is Assembly Required||N|
|Item Weight||3 pounds|
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Top Customer Reviews
The kit included:
-20 plastic Petri dishes
-20 sterile swabs
-2 (200 ml) bottles of nutrient agar
-Complete instructions on how to do a Science Fair project, how to get the agar prepared and into the plates and a handout on Science Fair display design. VERY complete, very good information.
This is easily the least expensive, most complete set for microbiology experiments I've seen. Just get yourself some distilled water (needed for capturing cultures of bacteria on the swabs) and a microscope if you like, and you'll be 'growing germs' as outlined in the handouts in no time!
NOTE: Do be careful when heating up the agar in the microwave. If you heat it too quickly you will end up with chunky (non melting) agar. Melt it at the lowest setting on the microwave in 30 second increments, swishing it around each time. Be sure to open the cap slightly before heating.
I tried both the hot water bath method of heating (takes forever) and the microwave. I was saddened to make this mistake with the first bottle of agar, but the second batch came out perfect. Take it slow, and all will be well.
- The agar really is kind of hard to melt. It took about 4 full minutes on 50% power to get it melted sufficiently. It gets a bit foamy if you shake it too hard, which leads to bubbles in your petri dishes. Just be sure to let it sit for a few moments before pouring it. It's also very HOT when it comes out, so be prepared for that.
- After you inoculate your petri dishes with sample swabs, definitely put them into zip bags and close them up. Use two bags if possible, because the SMELL of the bacterial colonies is really bad after they start growing. Some of my cultures began growing within 24 hours, and the closet where I had stored the bags smelled like an outdoor garbage can in the middle of summer. It was gag-inducing!
Just a little tip: If you really want to see some major bacterial cultures, try these places: kitchen sponges or wash cloths; inside the jets in your whirlpool tub; inside your washing machine; shower floors; remote controls; keyboards; computer mouses.
A day after swabbing the plates bacteria was growing. You are supposed to keep the plates in a plastic bag to keep the agar from drying out. And man.... when you open those bags, to let them breathe for a few minutes each day, the stink that comes out is nauseating. It is great. The bacteria/mold is growing like crazy.
This is for a fifth grade science fair and my son, who is in second grade, wants to do this when he is old enough for the science fair. I 100% reccomend this product and the seller, Science Stuff, and I will buy it again.
Packaging, product, directions, etc. were all there, nice kit and delivered very quickly, just no results.
Most Recent Customer Reviews
This actually worked great. We got it for a science experiment and it grew all kinds of bacteria and fungus. Very happy with the results.Published 7 months ago by Jennifer
This kit has worked out great for my daughter's science fair experiment!!! But make sure you fill the petri dishes a little less than half full or you'll need another bottle of... Read morePublished 14 months ago by Crystal Allgood
I feel they could make a better product. This is for in a pinch need something cool kinda fast type of deal.Published 16 months ago by Caleb
Perfect for science projects! Items were well priced and shipped quickly!Published 17 months ago by Jen B