ULABBoiling Flask of Flat Bottom Set, 2pcs of Vol.500ml, Borosilicate 3.3 Glass Material, UBF1010

works as expected and great price but it would be nice if it came with a size for a stopper since it doesnt include one. i bought the wrong size 4 times.... and i dont trot into ace with a flask... its frowned upon.

I bought this to use as a vessel to divide my bioluminescent phytoplankton and prolong the colony’s lifespan. It is perfect for that job! Have also used as a boiling flask and it is a great economical alternative to the Pyrex I usually buy! Was not looking to pay Pyrex prices for a bunch of plankton, but found a very well made alternative! Will definitely buy from again and recommend.

This product is great. I used some extraction methods that require reduction of Grain Alcohol and because the heat displacement is so evenly distributed, it took much less time than other flasks I have used in the past. And, at such a great price with awesome results, I bought 4 smaller ones too.

I had low expectations at this price but the glass came in and I am very happy. High quality.

I was looking for something to display my pretty math rocks in. This ended up being perfect. It's big enough to fit lots of dice including D60s and looks like a large potion vial.

Can't have to many boiling flasks. I haven't used these yet and who knows when I will if ever but couldn't beat the price.

Good Product

Broke after second use only boiling some water ! What if I serein the middle of a volatile reaction life would never be the same!

Arrived very well packed. And now in use as an artistic flower vaseSeems well made and does what it says

Excellent as described