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

Great for scientific experiments with the children

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.

We originally ordered agar petri dishes from another company but *many* of those dishes arrived wet and already growing bacteria/mold. We needed another set of agar petri dishes quickly for a science project and these arrived on time with all dishes usable and intact! There was a note included with the product that sometimes dishes get damaged in transit, with a number to call if necessary to arrange for replacement but we didn't need to use it. The quality of these dishes was so much better than the others we ordered! Also appreciate that the company proactively included information for customer service just in case.