DURAN 217414408 Wide Neck Beaded Rim 500 mL

DURAN 217414408 Round Bottom Flask Wide Neck Beaded Rim 500 mL

The DURAN 217414408 is a 500 mL round-bottom flask designed for reliable heating and reaction processes in laboratories. Manufactured from DURAN® borosilicate glass 3.3, it delivers outstanding chemical resistance, low thermal expansion, and excellent durability under repeated heating cycles.

The wide-neck design (~beaded rim) provides easy access for reagent addition, pouring, and cleaning, while the beaded rim reinforcement strengthens the neck to reduce chipping and mechanical stress. With uniform wall thickness, the flask ensures even heat distribution, minimizing hot spots and improving thermal performance. It also features a fired-on labeling field for durable sample identification.

Supplied in packs of 10 units, this flask is ideal for teaching labs, research environments, and synthetic chemistry applications where multiple vessels are required.

Features

• High-Quality Borosilicate Glass 3.3: Exceptional resistance to heat and chemicals.

• Round-Bottom Design: Promotes uniform heating and prevents localized overheating.

• Wide Neck with Beaded Rim: Simplifies filling, pouring, and cleaning while reinforcing durability.

• Uniform Wall Thickness: Improves heating consistency and reduces thermal stress.

• Fired-On Label Field: Provides durable space for permanent sample marking.

• Bulk Packaged: Supplied in sets of 10 for efficient lab use.

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

Key Specifications

• Catalogue Number: 217414408

• Nominal Capacity: 500 mL

• Material: DURAN® Borosilicate Glass 3.3

• Neck Type: Wide neck with beaded rim

• Body Shape: Round bottom

• Height / Diameter: Standard 500 mL round-bottom dimensions (~per DIN ISO 24450)

• Labeling: Fired-on marking field

• Packaging: 10 units per pack

• Autoclavable: Yes (~121 °C)

Applications

• Heating & Boiling: Suitable for uniform heating of liquids in mantles or baths.

• Chemical Reactions & Distillations: Reliable vessel for synthetic chemistry workflows.

• Educational & Research Labs: Supplied in packs of 10 for training or batch experiments.

• General Laboratory Use: Practical where frequent cleaning and handling are required.