250ml Erlenmeyer Flask with Blue Screw Cap, Borosilicate Glass, Graduated (Single)

Great product. It's well made and I'm anxious to use it (for beer making)!

Thick glass, well-fitting screw top. Sterilized in pressure cooker without a glitch. Does the job. Recommended.

Affordable and exactly what you expect. I use this flask for mixing solutions for all sorts of projects. The glass is thick, no bubbles or flaws, and the screw cap seals tight. Perfect for home lab or brewing setups. Cleaned easily and holds up to heat. I've poured lye in it, hot water and solvents. Seems to be great so far! Cheapest deal I found.

This is not good glass . Notice the seam on the side means it was made by a mold . Lab grade glass is seamless and can handle a mini fridge!!

This glass flask, along with a magnetic stirrer, is the perfect solution for our Bioluminescent Dinoflagellates. Previously when we would agitate them to get them to glow some seemed to stick to the side of the plastic flask and then dry there. This allows for an amazing glow with minimal effort and splashing. The glass flask has a smooth consistent form which allows the magnetic piece to spin well because the plastic flask didn't work with the stirrer. The vented cap we had for the plastic flask doesn't screw on, but rests easily on top. The size is perfect and the price I paid was a good value.

Hi, we kept over or under estimating the amount of water to add to our k-cup brewer. It can manage 10-14oz. Sometimes we want the 10oz, sometimes we want the 14oz, or something in between. We used these metered flasks to find the right amounts and now we don't miss. The lids are a bonus, the coffee is set up the night before and we don't worry about spills.

Nice well made flask Cover seals well. Measurements on side not accurate

These seem to be quite substantial and may be a bit heavier than most. Note that there is a plastic lip on the top of the glass which could be a problem if you need to heat these much.

Buena calidad y servicio

El producto llejó antes de lo esperado y corresponde con la imagen, buen producto

Los matrces no tienen la calidad deseada para uso de laboratorio, que es para lo que se diseño el matraz. Se rompen con el calor, es decir, se ponen a herbir y por alguna razon se rompen, no resisten la temperatura, por lo que es un producto de muy baja calidad.

El producto se ve de buena calidad pero viene en un empaque demasiado sencillo y llegó rota una pieza, además el empaque no tiene ninguna indicación de que es un material frágil.

Buena calidad en el producto, sin embargo, una pieza llegó rota, no trae indicación el paquete que se trata de un producto de cristal.