DURAN 217117308 Flat Bottom Flask 5000 mL

DURAN 217117308 — Flat-Bottom Flask 5,000 mL (Narrow Neck, Beaded Rim)

The DURAN 217117308 is a 5,000 mL flat-bottom flask made from DURAN® borosilicate glass 3.3 (Type I / neutral glass), designed for large-scale heating, boiling, and reaction tasks. Its flat base provides excellent stability, allowing it to stand directly on hot plates or lab benches without requiring a support ring. The narrow-neck design helps minimize evaporation and enables controlled pouring, while the beaded rim reinforces the neck for improved resistance against chipping and mechanical stress.

Built with uniform wall thickness, this flask ensures even heating and reduces the risk of hot spots during demanding applications. It conforms to DIN ISO 1773 standards, ensuring precision, durability, and reliability in laboratory workflows. Supplied individually (1 per pack), it is autoclavable (~121 °C), making it reusable for sterile applications.

Features

• Large 5 L Capacity – Suitable for bulk heating, boiling, or reagent preparation.

• Premium DURAN® Borosilicate Glass 3.3 – Excellent thermal resistance and high chemical durability.

• Flat-Bottom Base – Stable placement without a support ring.

• Narrow Neck with Beaded Rim – Improves handling, minimizes spillage, and enhances durability.

• Uniform Wall Thickness – Promotes even heat distribution and reduces thermal stress.

• DIN ISO 1773 Compliant – Laboratory-grade glassware meeting international standards.

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

Key Specifications

• Catalogue Number: 217117308

• Nominal Capacity: 5,000 mL

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

• Neck Type: Narrow neck, beaded rim (~50 mm OD)

• Body Diameter: ~223 mm

• Height: ~290 mm

• Base Type: Flat bottom

• Standards Compliance: DIN ISO 1773

• Packaging: 1 unit per pack

• Autoclavable: Yes (~121 °C)

Applications

• Heating & Boiling – Stable and reliable for large-volume liquid heating.

• Distillation & Reactions – Suitable for chemical synthesis and reflux setups.

• Bulk Solution Preparation – Efficient for preparing or storing large quantities of reagents.

• Teaching & Research Labs – Durable choice for labs handling medium-to-large scale experiments.