PYREX 5L Round Bottom Boiling Flask with Short Ring Neck – 4260-5L

The PYREX 5L Round Bottom Boiling Flask is a high-quality laboratory glass flask designed for large-volume heating, boiling, mixing and chemical solution preparation. Manufactured from durable No. 7740 borosilicate glass, it features a reinforced short ring neck for secure stopper fitting and improved mechanical strength. Its spherical design promotes uniform heat distribution, making it suitable for research, pharmaceutical, industrial and educational laboratories. Key Features - 5L Capacity: Suitable for large-volume laboratory heating, boiling and chemical preparation. - Borosilicate Glass: Manufactured from PYREX No. 7740 glass for excellent thermal and chemical resistance. - Round Bottom Design: Promotes uniform heat distribution during controlled heating. - Short Ring Neck: Precisely tooled for consistent rubber stopper fitting. - Reinforced Rim: Enhances mechanical strength and durability. - Stopper Compatibility: Accepts a No. 11 rubber stopper. - Heat Resistance: Normal working temperature of 230°C. - Thermal Shock Resistance: Controlled glass wall thickness improves resistance to thermal stress. - 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 4260-5L Product Type Laboratory Boiling Flask Nominal Capacity 5000mL (5 Litres) Material No. 7740 Borosilicate Glass Flask Shape Spherical Bottom Type Round Bottom Neck Style Short Ring Neck Top Style Ring Mouth Design Reinforced Ring Opening Rubber Stopper Size No. 11 Stopper Included No Outside Diameter Approximately 221mm Overall Height Approximately 310mm 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 6 Pieces Manufacturer Quantity per Case 6 Pieces Applications Laboratory Heating, Boiling, Mixing, Solution Preparation and Routine Laboratory Washing