50ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 252X3 (Pack of 2)

Perfect for our lab.

This is a well made volumetric flask that accurately measures 10mL. Compared to purchasing at science supply shops, their price is reasonably good.

I love these things. I fill one with hydrogen peroxide and the other with alcohol. The really great thing about these is that when you need to soak something like a cotton ball or a q-tip, the liquid does not come rushing out like it would with an ordinary container, due to their design. When you have a cut or something else you need to treat, you will really appreciate them.

Well made for the price and have been great for standards so far; BUT I did have 2 break just from a stir bar bouncing off rotation a bit.

Cumple expectativas en calidad, puntualidad y previo.

I've been using this for a few months now and have had no problems with cracking even with major sudden temperature changes. It's not super heavy duty, but I'm not a heavy duty chemist. It's sturdy enough for regular casual use, and great for making and storing simple syrup!

I have been teaching chemistry for 27 years. These volumetric flasks fit the bill for teaching students how to make diluted solutions! The flasks were perfect quality, arrived well-packaged and are perfect for my classroom needs.

I weighed the volume of both flasks on a calibrated scale and both flasks were within their stated accuracy of +- 0.1 mL. The glass stoppers fit well and retain water within the flasks. Good deal.

As it should be!

Excelente producto, venía bien protegido… super recomendable

Estrega rápida y el.producto cumple.con las especificaciones

Artículo solicitado por Institución para proceso de Titulación. Cumple con las expectativas.

Un matraz me llegó con el tapón de vidrio estrellado, además el vidrio de los matraces presenta rayones que le restan estética. Todavía no los sometos a ciclos de calentamiento y enfriamiento, espero resistan bien.