DURAN 217111708 Narrow Mouth Beaded 50 mL

DURAN 217111708 Flat Bottom Flask 50 mL Narrow Mouth Beaded Rim

The DURAN 217111708 is a 50 mL flat-bottom flask made from DURAN® borosilicate glass 3.3, engineered for chemical resistance, thermal stability, and long service life in laboratory use. Its flat base allows the flask to stand securely on benches, hot plates, or heating surfaces without requiring additional support rings, making it convenient for heating, boiling, and reaction work.

The narrow-mouth neck provides controlled pouring and reduces the risk of spills, while the beaded rim strengthens the neck edge to resist chipping and mechanical stress during frequent handling. With uniform wall thickness, the flask ensures even heating, minimizing hot spots during thermal applications.

Supplied in a pack of 10 units, this flask is ideal for laboratories that require multiple identical vessels for small-scale experiments, distillation, or teaching purposes.

Features

• Durable DURAN® Borosilicate Glass 3.3 – Excellent resistance to heat and chemicals.

• Flat-Bottom Design – Stable placement on benches or heating plates without support.

• Narrow-Mouth Neck – Controlled pouring and reduced spillage.

• Beaded Rim Reinforcement – Added durability against chipping and breakage.

• Uniform Wall Thickness – Promotes even heat distribution and safe thermal performance.

• Autoclavable (~121 °C) – Safe for sterilization and repeated use.

• Bulk Packaged – Supplied in packs of 10, suitable for teaching and research labs.

Key Specifications

• Catalogue Number: 217111708

• Capacity: 50 mL

• Material: DURAN® Borosilicate Glass 3.3

• Bottom Type: Flat bottom

• Neck Type: Narrow-mouth with beaded rim

• Wall Thickness: Uniform

• Packaging: Pack of 10 units

• Autoclavable: Yes (~121 °C)

Applications

• Small-Volume Heating & Boiling – Suitable for compact experiments requiring uniform heating.

• Distillation & Reflux Setups – Useful in organic chemistry workflows with smaller reagent volumes.

• Teaching & Research Labs – Perfect for instructional setups requiring multiple identical vessels.

• General Laboratory Use – Stable and reliable flask for reaction, solution preparation, and handling.