Potato Dextrose Agar Plates - Evviva Sciences - Prepoured Potato Dextrose Agar PDA Petri Dishes - Excellent Growth Medium - Great for Mushrooms & Science Fair Projects

These came in sealed bags- 2 sealed dishes, then 3 sealed dishes on one bag as others stated. My order was for 10. They have a little moisture but not dripping wet like some have reported. No contamination after leaving them in room temperature for three weeks. Used two already with perfect results. Time to use the rest up or risk degradation. As with all these agar filled dishes, I wouldn't refrigerate as that will condense liquid and make a mess. We always refrigerate, but in this case it's a moot point considering the shipping company has them in their truck for hwo knows how long on adverse conditions. My only disappointment is that these should be individually sealed, or at least sealed in pairs seeing it's a "lot of 10". Once opened in front of a laminar flow or clean still air box, using them is really your only option or one runs the risk of contamination. I'm about to order a second batch hoping for similar results. So far, I would recommend these under the conditions stated above.

Worked great

Cultured very easily! No contamination on any plates!!

As a newbie to mushroom growing I did not have much luck with these. I put in one cc of liquid culture of Oyster mushroom in 5 of them and they just went moldy for me. I had done 20 homemade agar plates on my own. Used 10 of them, to see the difference. I had 5 of them with the same process with liquid culture and got the same type of mold, but my other 5 home made plates with liquid culture were good. So will chalk it up to my inexperience and a good learning experience. Will try them again later.

Let me tell you, these prepoured agar plates are like the red carpet for microorganisms, giving them the VIP treatment they deserve. First off, the convenience is off the charts, just pop the lid, and you've got a perfect microbial buffet ready to go! Microbes strut their stuff on these plates. It's microbial fame in the palm of your hand. And the best part? The potato dextrose agar provides a nutrient-rich environment that even bacteria couldn't resist. It's like offering them a five-star meal. I give them to all of my neighbors for fun.