Huanyu 90mm Glass Petri Dish with Lids High Borosilicate Glass Petri Dishes Bacterial Culture Dishes for Lab Science Experiment (5pcs: 90mm)

these dishes were packed efficiently (not a lot of extra packaging material to dispose of) and in individual little boxes. They also arrived quickly and inside the package was a kind note that made me happy I purchased from this distributor. Highly recommend, a good value and feel good purchase.

All of them came in tacked. Packaged really well individually in 1/2 inch thick foam separated and protected on all sides. I dont care about the lids being a bit oversized, they also dont cost an arm and a leg for bolistic petri dishes for a hobby. Thank you.

These Petri dishes are a very, very good value. They are also packed extremely well. Its impressive when you consider they are shipped directly from China to the US and worldwide. They are made of quality borosilicate glass and when you consider the tumble and shake of the rigorous Amazon fulfillment/logistics process and surviving without some sort of breakage, it's a testament to this merchant's attention to detail and care.So on that point, you need not worry.The quality and the clarity of the glass is extraordinarily good....a cut above other vendors, including Corning. Also, the price point for 5 sets (dishes & covers) beats the competition hands downIndeed, the most important thing about buying from Huanyu is the merchant, who is totally committed to product quality and customer satisfaction. I had a few questions about the dishes and my email was responded to quickly, within just a few hours.You cant make a better choice than Huanyu. I will certainly be patronizing this merchant again. Highly recommended!

Overall good product. Thicker glass than I expected and consistency/precision is pretty good. Unfortunately one of the dishes did form a crack along the edge during the first sterilization. As there were no cracks when I received the dishes, I can only assume it was likely caused by a pre-existing but not visible hairline crack or some sort of gas bubble in the glass. While this does suggest some lack of quality control at the factory, it's no surprise at this price and still a good value.

As other reviewers pointed out, the difference in size between the two pieces of the dish is probably bigger than you're used to--the smaller half can slide around a bit when the the petri dish is closed. It's really not a big deal and doesn't affect sterility since you should be incubating or storing them with the medium on top ("upside down") once it's set anyway. Because the bigger dish also has a lip that is longer than the entire height of the lower dish, they can be slightly tricky to pick up when you're pouring (but again, most of the time it won't matter because once it's "upside down," you just grab the bigger dish anyway).I have had them a few weeks and have broken two big halves by accidentally dropping them onto the floor a few feet (the smaller halves survived, maybe because they had the agar in them to absorb some of the energy). So they can be a little delicate, but overall it would probably be a waste to make a thicker petri dish. I have dry-heat sterilized these several times at 170 C for 1 hour with no problems at all.Overall, these pay for themselves over plastic petri dishes once you get about 5 uses out of them and other borosilicate petri dishes are a lot more expensive, so this is probably your best bet if you're a cheapskate like me. :)

As an Ebay seller/buyer for 17 years, I've never seen such care in packaging Fragile Glass Items. Perfect size box, then box in box !! Each dish!!! bubble wrap, extra foam protection! ...WOW!!! UFB!! As for Dishes they have done well in first tests, lids may be a little loose but you never want ones too tight working under flow hood ... Nothing that para film/or micro-pore tape cant take care of. Will buy again. In a Nut Shell, If i were to package my Testicles and send them somewhere, these people are who I'm calling!! Don't Forget to laugh in these hard times my friends!!

A nice heavy glass set. Nothing was broken and the company was quick to communicate. Will definitely be getting more of these, they are great.

The customer service was great. The price on these is some of the best I have worked with. The thickness is ideal for my uses