100ml Narrow Mouth Erlenmeyer Flask, 3.3 Borosilicate Glass, Karter Scientific 250I3 (Pack of 2)

I mainly use this to make yeast starters for making beer. It's a large flask so I can make large starters. It works well on my homemade stir plate. The stir bar has no issues spinning on the glass. I haven't really dropped the flask, but I have banged it around a little on accident. It's held up well and I imagine having it for a long time. This definitely helps me make great beers.

Good price. Seems well made. Sturdy top rim.

This is a solidly made flask with thick walls and base. In my ideal universe I would be offered a chance to purchase an appropriate stopper. But I am still pleased with my purchase.

Very happy

The size worked for Thai small cake, but the size is so teeny, I can’t imagine using it for anything else

I take my dry yeast mix it in with wort and let it sit. The device is sturdy and doesn't feel like it will break easily. Easy-to-read information on the unit to help me better determine the amounts.

The volume graduations are labeled +/- 5% accuracy, which is standard for this product. Mine was much more accurate than this as measured by a volumetric flask. If such measurements are important to you, you should measure it to know how true the graduations are. The flask stood up to its first applied gas flame when I used it to boil water for tea. One does not need the Pyrex brand name to get an excellent flask.The product itself was excellent, but watch out for that Amazon delivery. They left it on my outside doorstep, right in the path of the swing of the door. If I didn't know that the package arrived and looked al the picture showing the delivery, I probably would have opened the door, sending the flask bouncing down the step to break when it hit the bottom. I had to use another door to go outside to get the package.Amazon should tell its delivery people not to leave ANY package in the swing-space of the door. It is inconvenient for regular packages, and it could lead to breakage for fragile contents. One would think that should be obvious to the delivery personnel, but alas not!

Using as a gender reveal prop, so worked as needed.

I was looking for some smaller sized beakers and flasks for experiments and this unit is the perfect piece.Can withstand high temperatures, the painting/marking does not fade, can be hand washed or used in a dishwasher too. Very convenient and easy for storage.For the price, this was a good purchase.

Really well made quality glass. I’m just gonna be using for light weight use to extract fertilizers like Calcium and potassium and what not but im sure they will very well stand the harsher needs what lab or chemist would use it for

So much easier to use this than several smaller ones

It’s perfect

Arrived well packed in good shape. Should work well, very satisfied with all other Karter I’ve bought, this is same. Thanks