Pyrex® Volumetric Mixing Flask, with ST Stopper, Capacity 250 mL, Corning (CAT#: STEM-L-3971-LKN)

These Pyrex® volumetric mixing flask are available in 100, 250, 500, and 2,000 mL. For 100, 250, and 500 mL sizes, the upper bulb, located between the stopper and the capacity graduation is approximately one-tenth the flask rated capacity. For 2 L size, the upper bulb is only one-twentieth capacity. The additional bulb assists in the mixing of liquids or powders when shaken.

Material: borosilicate glass
Sterility: non-sterile
Stopper size: 16
Tol. measuring range: 0.12 mL
Capacity: 250 mL

Class A.
Long neck.
Closure type ST stopper.