DURAN 217114405 Narrow Neck Beaded 500 ML

DURAN 217114405 Flat Bottom Flask 500 ML (Narrow Neck Beaded Rim)

The DURAN 217114405 is a 500 mL flat-bottom flask designed for reliable laboratory heating, boiling, and reaction applications. Made from DURAN® borosilicate glass 3.3 (Type I / neutral glass), it provides excellent resistance to chemical attack and thermal stress, ensuring durability in demanding lab environments.

The flat-bottom base allows the flask to stand securely on work benches or hot plates without requiring a support ring, offering greater convenience and safety during heating. Its narrow-neck opening (~34 mm OD) minimizes evaporation and ensures more controlled pouring. The beaded rim reinforces the neck, reducing the risk of chipping and extending the flask’s service life. With uniform wall thickness, the flask supports even heating and reduces hot spots, making it ideal for repeated use.

Features

• Premium Borosilicate Glass 3.3 – High thermal and chemical resistance for long-term use.

• Flat-Bottom Design – Provides stable placement on hot plates and work surfaces without extra supports.

• Narrow Neck (~34 mm OD) – Improves pouring control and reduces evaporation.

• Beaded Rim Reinforcement – Strengthens the neck and minimizes chipping.

• Uniform Wall Thickness – Promotes consistent heating and reduces stress under temperature changes.

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

• Standards Compliance – Manufactured in accordance with DIN ISO 1773.

• Laboratory Pack – Typically supplied in packs of 10 units for efficient stocking.

Key Specifications

• Catalogue Number: 217114405

• Nominal Capacity: 500 mL

• Material: DURAN® Borosilicate Glass 3.3 (Type I / neutral glass)

• Neck Type: Narrow neck with beaded rim (~34 mm OD)

• Body Diameter: ~105 mm

• Height: ~163 mm

• Bottom Type: Flat bottom (self-standing)

• Wall Thickness: Uniform for even heating

• Autoclavable: Yes (~121 °C)

• Standards Compliance: DIN ISO 1773

• Packaging: Pack of 10 units

Applications

• Heating & Boiling – Reliable for use on hot plates and in heating setups.

• Reactions & Distillations – Suitable for controlled experiments requiring 500 mL capacity.

• General Laboratory Use – Ideal for solution preparation, reagent storage, or sample handling.

• Educational & Research Labs – Versatile glassware for training and research workflows.

• Sterile Applications – Suitable for labs requiring repeated autoclave sterilization.