DURAN 217419106 Round Bottom Flask 20000 mL

DURAN 217419106 — Round-Bottom Flask, Wide Neck, Beaded & Reinforced Rim, 20,000 mL

The DURAN 217419106 is a 20,000 mL (20 L) round-bottom flask designed for large-scale laboratory and industrial applications. Manufactured from DURAN® borosilicate glass 3.3, it delivers outstanding chemical resistance, low thermal expansion, and high durability under repeated heating and cooling cycles.

This flask features a wide neck (~89 mm OD) for easier filling, pouring, and cleaning, while the beaded & reinforced rim strengthens the neck against mechanical stress and minimizes the risk of chipping, which is particularly important at larger diameters. Its round-bottom shape combined with uniform wall thickness ensures very even heat distribution, making it ideal for demanding processes such as bulk boiling, distillation, reflux, and large-scale reagent preparation.

Supplied as a single unit (1 per pack), this model belongs to the non-DIN EN ISO size series, tailored for extra-large volumes.

Features

• Massive 20 L Capacity – Designed for bulk laboratory and pilot-scale operations.

• Premium DURAN® Borosilicate Glass 3.3 – Superior resistance to heat, chemicals, and thermal shock.

• Wide-Neck Opening (~89 mm) – Facilitates easier access for pouring, filling, and cleaning.

• Beaded & Reinforced Rim – Provides extra strength and durability at the neck edge.

• Round-Bottom Geometry – Promotes uniform heating, reducing hot spots during high-temperature use.

• Uniform Wall Thickness – Ensures thermal stability and reliable heating performance.

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

• Supplied Individually – One flask per pack, intended for specialized lab and industrial needs.

Key Specifications

• Catalogue Number: 217419106

• Nominal Capacity: 20,000 mL (20 L)

• Material: DURAN® Borosilicate Glass 3.3

• Neck Type: Wide neck with beaded & reinforced rim

• Body Outer Diameter: ~345 mm

• Neck Outer Diameter: ~89 mm

• Height: ~520 mm

• Standards: Non-DIN EN ISO classification

• Packaging: 1 unit per pack

• Autoclavable: Yes (~121 °C)

Applications

• Large-Scale Heating & Boiling – Reliable vessel for handling 20 L volumes in research or production labs.

• Bulk Distillation & Reflux – Suitable for large-scale synthesis and process chemistry.

• Solution & Media Preparation – Ideal for preparing and storing bulk reagents or culture media.

• Industrial & Pilot Plants – Designed for heavy-duty workflows requiring durable, high-capacity glassware.

• Research & Education – Used in advanced labs for teaching or experimental setups requiring high-volume flasks.