DURAN 217312409 Flat Bottom Flask 100 mL

DURAN 217312409 Flat Bottom Flask 100 mL (Wide Neck Beaded Rim)

The DURAN 217312409 is a 100 mL flat-bottom flask designed for laboratory heating, boiling, and reaction applications. Made from DURAN® borosilicate glass 3.3 (Type I / neutral glass), it offers exceptional chemical resistance, low thermal expansion, and durability under repeated heating cycles.

Its wide neck (~34 mm OD) provides easy access for adding solids, pouring liquids, and cleaning, while the beaded rim reinforces the neck to reduce the risk of chipping. The flat-bottom design allows the flask to sit securely on hot plates or lab benches without a support ring, making it convenient and safe for routine use.

This flask complies with DIN ISO 24450 standards for wide-neck flat-bottom flasks and is autoclavable (~121 °C), ensuring safe sterilization and long-term reusability. It is typically supplied in packs of 10 units, making it practical for teaching, research, and general laboratory environments.

Features

• Premium Borosilicate Glass 3.3 – High resistance to heat and chemicals.

• Wide Neck (~34 mm OD) – Easier filling, pouring, and cleaning.

• Beaded Rim Reinforcement – Adds mechanical strength, reduces chipping risk.

• Flat-Bottom Design – Stable placement directly on benches or hot plates.

• Uniform Wall Thickness – Promotes even heating, minimizing hot spots.

• Standards Compliance – Manufactured under DIN ISO 24450.

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

• Bulk Packaging – Typically supplied in cases of 10 units.

Key Specifications

• Catalogue Number: 217312409

• Nominal Capacity: 100 mL

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

• Neck Type: Wide neck, beaded rim (~34 mm OD)

• Body Diameter: ~64 mm

• Height: ~105 mm

• Base Type: Flat bottom

• Standards Compliance: DIN ISO 24450

• Packaging: Pack of 10 units

• Autoclavable: Yes (~121 °C)

Applications

• Heating & Boiling – Small-volume heating on hot plates or baths.

• General Reactions – Suitable for mixing and small-scale experiments.

• Educational Use – Widely used in teaching labs for safe and durable glassware.

• Research & Industry – Reliable for solution preparation, chemical workflows, and routine lab tasks.

• Convenience – Wide mouth improves accessibility for cleaning and handling.