DURAN 212173606 Beaker / Flask — 250 mL

DURAN 212173606 — 250 mL Super Duty Narrow-Neck Erlenmeyer Flask

The DURAN 212173606 is a Super Duty narrow-neck Erlenmeyer flask with a capacity of 250 mL, manufactured from borosilicate glass 3.3. It’s built for durability, with a reinforced, sturdy rim that provides higher mechanical strength and greater resistance to impact and breakage compared to standard flasks. The manufacturer refers to its “Super Duty” design for heavy-use lab environments.

The flask has approximate graduations in a white, easy-to-read scale for rough measurement. It also features a fired-on white ceramic label field for permanent sample identification that withstands cleaning and sterilization. The wall thickness is uniform to support even heating and reduce stress concentrations that could lead to cracks or failure. It is autoclavable, allowing for sterilization via steam (~121 °C) without damaging the glass.

Applications

• General laboratory use: mixing, culturing, reagent preparation, and heating

• Ideal for teaching, research, and industrial labs with high handling frequency

• Suitable for work requiring narrow-neck design to minimize evaporation or allow stopper use

Limitations

• Graduations are approximate — not for precise volumetric analysis

• Glass is reinforced but still fragile — avoid impacts or sudden extreme temperature changes

• Medium capacity (250 mL) makes it suitable for small-to-moderate volumes, but not bulk processes