DURAN 217219101 Round Bottom Flask Rim 20000 mL

DURAN 217219101 Round Bottom Flask Narrow Mouth Beaded & Reinforced Rim 20000 mL

The DURAN 217219101 is an extra-large 20,000 mL (20 L) round-bottom flask, engineered for demanding large-scale laboratory and industrial applications. Made from DURAN® borosilicate glass 3.3, it offers exceptional resistance to thermal stress, mechanical strain, and aggressive chemicals.

Its round-bottom geometry with uniform wall thickness ensures highly uniform heating, essential for safe and effective large-volume boiling, distillation, reflux, and reactor operations. The narrow-mouth neck is reinforced with a beaded rim, providing added durability and resistance against chipping or breakage under frequent handling.

This flask is part of the non-DIN ISO series, conforming instead to ASTM E1403 specifications, which standardize large-capacity laboratory glassware. Measuring ~515 mm in height, with a ~345 mm body diameter and ~76 mm neck OD, this flask is built for scale-up chemistry, pilot plants, and industrial laboratories. It is autoclavable, supplied individually (1 unit), and designed for workflows requiring both capacity and durability.

Features

• High Capacity: 20 L flask for large-volume chemical reactions and solution handling.

• Round-Bottom Shape: Provides uniform heating, minimizing hot spots in bulk heating applications.

• Reinforced Narrow Neck: Beaded rim improves mechanical strength and reduces chipping risk.

• Premium Borosilicate Glass 3.3: Resistant to thermal shock, repeated heating, and chemical attack.

• Uniform Wall Thickness: Ensures stable heating performance and safe operation.

• ASTM E1403 Compliant: Meets standards for oversized laboratory glassware (non-DIN ISO).

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

• Supplied Individually: One flask per pack due to size and specialized handling needs.

Key Specifications

• Catalogue Number: 217219101

• Nominal Capacity: 20,000 mL

• Material: DURAN® Borosilicate Glass 3.3

• Neck Type: Narrow mouth with beaded & reinforced rim (~76 mm OD)

• Body Outer Diameter: ~345 mm

• Height: ~515 mm

• Standards Compliance: ASTM E1403 (non-DIN ISO size)

• Uniform Wall Thickness: Yes

• Autoclavable: Yes (~121 °C)

• Supplied Units: 1 per pack

Applications

• Large-Scale Chemistry: Suitable for pilot plants, industrial R&D, or process laboratories.

• Distillation & Reflux: Ideal for setups requiring uniform heating across large liquid volumes.

• Bulk Heating & Reactor Use: Functions as a reactor vessel for chemical synthesis or solution preparation.

• Media & Reagent Preparation: Supports large-scale batch preparation with durable, reusable glassware.