DURAN 217115401 Flat Bottom Flask 1000 mL

DURAN 217115401 — Flat-Bottom Flask 1000 mL (Narrow Neck, Beaded Rim)

The DURAN 217115401 is a 1,000 mL flat-bottom laboratory flask designed for heating, reactions, and general-purpose laboratory work. Made from DURAN® borosilicate glass 3.3 (Type I / neutral glass), it offers excellent chemical resistance and low thermal expansion, ensuring long service life under demanding conditions.

Its flat base provides stable placement directly on work benches or hot plates without the need for a support ring, making it both convenient and safe to use. The narrow neck with a beaded rim enhances durability, improves resistance to chipping, and allows more controlled pouring. The flask’s uniform wall thickness ensures consistent heat distribution and minimizes the risk of thermal stress, making it reliable for boiling, distillation, or reaction processes.

Features

• High-Quality Borosilicate Glass 3.3 – Resistant to heat and chemicals for reliable lab performance.

• Flat-Bottom Design – Stable placement without requiring support rings.

• Narrow Neck (~42 mm OD) – Reduces evaporation and allows controlled pouring.

• Beaded Rim Reinforcement – Strengthens the neck opening, reducing risk of chipping.

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

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

• Standard Compliance – Manufactured according to DIN ISO 1773.

• Bulk Packaging – Supplied in packs of 10 units for efficient stocking.

Key Specifications

• Catalogue Number: 217115401

• Capacity: 1,000 mL

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

• Neck Type: Narrow neck with beaded rim (~42 mm OD)

• Body Diameter: ~131 mm

• Height: ~190 mm

• Bottom Type: Flat bottom

• Standards: DIN ISO 1773 (narrow-neck flat-bottom flasks)

• Autoclavable: Yes (~121 °C)

• Packaging: 10 units per pack

Applications

• Heating & Boiling – Reliable for controlled heating tasks in 1 L scale experiments.

• Reactions & Distillations – Suitable for laboratory chemical processes requiring uniform heat distribution.

• General Lab Use – Ideal for reagent preparation, solution handling, and chemical storage.

• Teaching & Research Labs – Perfect for academic and R&D environments where multiple flasks are required.

• Sterile Applications – Suitable for repeated autoclave sterilization in microbiology or chemistry labs.