DURAN 217313602 Wide Mouth Flask 250 mL

DURAN 217313602 Wide Mouth Round Bottom Reaction Flask 250 mL (Beaded Rim)

The DURAN 217313602 is a 250 mL wide-mouth, round-bottom reaction flask made from premium DURAN® borosilicate glass 3.3. Known for its excellent chemical resistance, low thermal expansion, and durability, this flask is engineered for heating, boiling, distillation, and other laboratory reaction setups.

Its wide mouth provides superior accessibility for adding reagents, inserting equipment (such as stir bars or probes), and simplifying cleaning compared to narrow-neck flasks. The beaded rim reinforces the neck opening, minimizing the risk of chipping and extending the lifespan of the flask. With a round-bottom design and uniform wall thickness, it ensures even heat distribution, reducing hot spots during heating.

Supplied in packs of 10 units, the flask is suitable for teaching, research, and industrial laboratories that require robust and reliable glassware.

Features

• Premium DURAN® Borosilicate Glass 3.3 – High chemical and thermal resistance.

• Wide-Mouth Opening – Facilitates easy filling, reagent addition, and cleaning.

• Beaded Rim – Reinforced for greater durability and chip resistance.

• Round-Bottom Shape – Ensures uniform heat distribution during boiling and distillation.

• Single-Neck Design – Standard for versatile reaction and heating setups.

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

• Bulk Packaged – Typically supplied in cases of 10 for efficient lab stocking.

Key Specifications

• Catalogue Number: 217313602

• Nominal Capacity: 250 mL

• Material: DURAN® Borosilicate Glass 3.3

• Neck Type: Wide-mouth, beaded rim

• Shape: Round bottom, single neck

• Wall Thickness: Uniform for even heating

• Packaging: 10 units per pack

• Autoclavable: Yes (~121 °C)

Applications

• Reaction Vessels – Ideal for small-scale chemical reactions and distillations.

• Heating & Boiling – Round-bottom design ensures consistent heat transfer.

• Reagent Preparation – Easy to add or remove solids/liquids due to wide opening.

• Educational & Research Labs – Convenient for teaching, training, and research workflows.

• Cleaning Efficiency – Wide-mouth geometry simplifies post-use maintenance.