PYREX 2L Round Bottom Boiling Flask with Long Neck and Tooled Mouth – 4280-2L

The PYREX 2L Round Bottom Boiling Flask is a durable laboratory glass flask designed for heating, boiling, mixing and chemical solution preparation. Manufactured from high-quality No. 7740 borosilicate glass, it features a long neck with a tooled mouth for secure rubber stopper fitting. Its spherical design promotes uniform heat distribution, while its excellent chemical durability and thermal shock resistance make it suitable for research, pharmaceutical, industrial and educational laboratories. Key Features - 2L Capacity: Suitable for medium-to-large-volume laboratory heating, boiling and chemical preparation. - Borosilicate Glass: Manufactured from PYREX No. 7740 glass for excellent chemical and thermal resistance. - Round Bottom Design: Promotes uniform heat distribution during controlled heating. - Long Neck: Provides a convenient design for handling and laboratory apparatus arrangements. - Tooled Mouth: Designed for consistent rubber stopper fitting. - Stopper Compatibility: Accommodates a No. 8 rubber stopper. - Heat Resistance: Normal working temperature of 230°C. - Thermal Shock Resistance: Controlled wall thickness improves resistance to temperature changes. - Chemical Durability: Suitable for use with many commonly used laboratory chemicals. - Reusable Construction: Designed for repeated laboratory applications. Parameter Specification Brand PYREX Manufacturer Corning Product Code 4280-2L Product Type Laboratory Boiling Flask Nominal Capacity 2000mL (2 Litres) Material No. 7740 Borosilicate Glass Flask Shape Spherical Bottom Type Round Bottom Neck Style Long Neck Top Style Tooled Mouth Rubber Stopper Size No. 8 Stopper Included No Outside Diameter Approximately 166mm Overall Height Approximately 308mm Normal Working Temperature 230°C Thermal Resistance Thermal Shock Resistant Chemical Resistance Excellent Chemical Durability Glass Colour Clear / Transparent Reusability Reusable Manufacturer Quantity per Pack 1 Piece Manufacturer Quantity per Case 18 Pieces Applications Laboratory Heating, Boiling, Mixing and Chemical Solution Preparation