PYREX 250mL Iodine Determination Flasks with Glass No. 22 Standard Taper Stopper, 1/Pk

These flasks are thin, sound thin, feel thin. Small flasks - thin wall sections - sure. My other glass feels better in my hand for what its worth. Bad QA or shipping from Amazon, only one package arrived usable. Two other packages were completely shattered, I knew as soon as I picked them up. No way the delivery person did not realize. In any case - lesson learned. Need reliable glass? Get it from a reliable source.

I bought this item when the price dropped making it easy to select. It is a name I know and quite sturdy. A no brainer, I could have used our measuring cup in my kitchen. Today, I have a special flask for my chemical mixture.

The media could not be loaded.  It is what they showed on the page provided no disappoints here.

I have several sets of these and use them for a lot of stuff, none in a science lab or classroom. Unless you count my kitchen as a science lab. They (with cork stoppers) currently hold water, taco sauce from a taco kit, and homemade salad dressing in the fridge, M&Ms, peanuts and almonds on my counter, and flowers in my living room. The tiny one makes a really cute bud vase. With my soapstone countertop and these and beakers holding various foods, I guess I do kind of have a Breaking Bad kitchen!These are good quality and fun to have around.

It is better than the bomex flask as a water cup ...1000 ml is a little too big. 750 ml seems good.

good product at a great price

It's perfect, but I had to buy rubber stoppers separate.

This starter pack can be put to use by any novice or expert alike. With pinpoint measurements from 50mL to 1000mL, these little guys truly pack a punch when precision is required. The durability of Pyrex is also a huge selling point, as they are pretty well shatter resistant. After transferring my pack from room to room, one fell out of my grasp and landed flat on concrete from five feet. Expecting an explosion of glass, to my amazement there it bounced and landed flat with no issue. Recommend to all!