20 Pack Sterile Plastic Petri Dishes with Lid, 90mm Dia x 15mm Deep

Two weeks after pouring 20 agar plates I have only had one become contaminated, so it was likely a random spore during pouring that found it's way inside. I'm happy with the product overall. The dishes are thin, but plenty strong enough to do what they are intended for. So long as the plastic bag the dishes come in isn't compromised, it seems they will indeed be sterile. Much easier than sterilizing my glass petri dishes, albeit more wasteful, but a massive time saver.

Used these for a 5th grade science project. They worked well.

Bought for a school project and the product was appropriate. Very good quality.

Not very durable, the plastic is extremely thin and cracks. That said it worked

Perfect product for science experiments in an after-school tutoring/enrichment program.Highly recommend. Made of plastic but sturdy.

Got these to make my own agar petri dishes. They came out great. I poured between 140-160 F and they didn't melt. I use the same temp for condiment cups and they don't melt either.I poured them this week so I don't have a long term rating on sterility but so far they seem to be sterile.

They came on time but of the first 30 I opened, 5 were broken. They are fragile plastic but that is 17% broken so far. They need better packaging for sure.

This product is not reusable and it is not made of polypropylene. The plastic cannot withstand autoclave temperatures and will melt. Not recommended if you need reusable petri dishes.They come sterilized as long as you keep them in the packaging. Hope this helps my fellow Beakers (science nerds)