Bacteria Science Kit (IV) (Gift Pack): Prepoured LB-Agar Plates and Cotton Swabs. Exclusive Free Science Fair Project E-Book Packed with Award Winning Experiments. (IV Gift Pack)

Better that I expected, results start showing with in a day. Keep it in a dark place.

We homeschool and I've had three of my kids now go through high school biology with our local co-op. Two of them have done lab report projects having to do with bacteria. One was testing different cleaners against raw chicken, and the other was testing the 5 second rule with different surfaces. These petri dishes have been great to grow our results. What I have done for incubation is set them in a Styrofoam cooler on it's side and have it near a space heater. The heater did not run constantly, but it was enough to allow the colonies to grow. Both times ordering, nothing came damaged or contaminated. I would trust it again.

Bought this for my sons 5th grade science fair project. It was AWESOME! It was pretty easy for my 5th grader to use (with parental supervision and assistance). He used it to check the dirtiest things in his room. The conclusion was the dirty clothes basket and he took first place in his class science fair. The instructions were clear and easy to understand.

Worked great for my daughter’s science project!!

I'm an avid fan of chemistry experiments and enjoy doing experiments related to chemistry. Since the plates arrived and are in good condition, I was able to try the experiment, but the first one I tried did not work, so I tried a couple more in different places and the performance improved significantly. I would definitely buy it again and try more experiments.the picture:I tested the bacterias in various places. The date on the plates indicates the date when the experiment began.top left: kitchen trash can (started on may 8th)top right: bathroom floor (started on may 8th)bottom left: computer screen (started on may 11th)bottom right: bottom soles of my slippers (started on may 11th)

These were so fun! Testing the 'germiness' of random things was great. Watching it grow was even more fun!

The dishes come in a single stack, all wrapped together, but the lids are not secured onto the bottoms. As soon as you unwrap them the lids start falling off. IF they were sterile before, they immediately become contaminated. I say "if" because I don't know how they could be sterilized. The dishes are made of cheap plastic that looks like plain acrylic like any ordinary small plastic box. I took the ones that had the lids fall of and ran them through sterilization and, as I expected, I ended up with a shrunken, twisted mass of melted plastic. I threw all of them out. Go ahead and spend the money for good GLASS petri dishes. If you buy these you might as well just set your money on fire.

Bought it for my 9year olds science project. Everything was as advertised.

My daughter wanted these for her science project testing germs on classroom doorknobs. Bacteria grew just as described. Very gross but so interesting!