200 Pack 90mm Petri Dishes Sterile Plastic Bulk with Lids Deep Clear Thick Science Lab Cell Culture Agar Dish for Lab Jelly Science Party Project Experiment Analysis Equipment Projects Supplies

Absolutely worth every penny, listen folks are going to run into contamination in these fields, it is not something you can eliminate. That being said I've only had about 4 plates contaminate prior to use and I'll blame myself for messy pours. These are all around the best bang for your buck, I've been using these plates for years.

Some other reviewers mentioned cracked lids, upside down plates, and/or sliced bags compromising sterility; but I'm not seeing any of those problems in the 200-pack of 90mm×15mm plates I just received. All plates and bags appear to be intact and they're all oriented the right way in the sleeves. Packaged ten per sleeve which is perfect because I don't have the FFU height/volume to comfortably accommodate much taller sleeves, and no weird gussets or anything to complicate cleaning the sleeves before bringing them under the hood. Thin filmsy plastic like any other cheap disposable plates but I don't care, the really thick PE dishes that cost 5x as much crack just as often for me anyway. Great lid size, will be easy to maneuver lids on and off in a small sterile work zone but not enough gap to make sealing them tricky. Have not yet commenced with pours but I'm not anticipating any issues. Will update in a few weeks if I find any sterility or durability problems with this batch. If I haven't updated this by March 2026, then they were all clean. They look great. Thank you!

Dirty plates. Poured 10 plates and inoculated 4 right away. 2 of four developed contamination right away. 2 of 6 that were inoculated developed contamination. All sterilization measures taken, including PC'd agar, all tools heat treated or used iso. All work done in still air box. All plates taped. Been doing this for almost a year, this is the first time I have ever had contamination in any stage of my process. Only thing that has changed was the brand of plates I bought. Might be a good deal in bulk, but I expect significant loss with the remaining 190 plates. Tried one more round, water agar to try and clean contamination, all 10 plates loaded with contamination. Throwing them all out. Literally aggressive sterilization techniques and even on water agar, they're loaded. Buy a different brand, my guess is factory QA/QC is terrible.

Nice and a good deal

These worked perfectly for my students' bacteria lab! Of the pack of 200, approximately 10 had cracked lids or bases. Value for money is most definitely there. I had no issues with pouring, cooling, or storage with agar, and will most definitely be purchasing again for next school year.

These plates are a great price and work as one would expect. My only gripe is of the two orders I have made there were a few cracked plates in both orders. The second at least had all the 10plate bundles wrapped in bubble wrap which seemed to help. For the cost a couple of cracked plates is not going to run my day and still makes these cheaper than the others. I have not had a contamination issue with any of these plates thus far.

Clean and not broken on arrival

Works great..