PYREX 3L Round Bottom Boiling Flask with Short Ring Neck – 4260-3L

The PYREX 3L 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 reinforced short ring neck for secure stopper fitting and increased mechanical strength. Its round-bottom design promotes uniform heat distribution, making it suitable for research, pharmaceutical, industrial and educational laboratories. Key Features - 3L Capacity: Suitable for large-volume laboratory heating, boiling and chemical preparations. - Borosilicate Glass: Manufactured from PYREX No. 7740 glass for excellent chemical durability and thermal resistance. - Round Bottom Design: Promotes uniform heat distribution during controlled heating. - Short Ring Neck: Precisely tooled for consistent rubber stopper fitting. - Reinforced Rim: Provides additional mechanical strength. - Stopper Compatibility: Accepts a No. 10 rubber stopper. - Heat Resistance: Normal working temperature of 230°C. - Thermal Shock Resistance: Controlled wall thickness helps withstand temperature changes. - Chemical Durability: Resistant to many commonly used laboratory chemicals. - Reusable Construction: Designed for repeated laboratory applications. Parameter Specification Brand PYREX Manufacturer Corning Product Code 4260-3L Product Type Laboratory Boiling Flask Nominal Capacity 3000mL (3 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. 10 Stopper Included No Outside Diameter Approximately 184mm Overall Height Approximately 260mm Normal Working Temperature 230°C Thermal Resistance Thermal Shock Resistant Chemical Resistance Excellent Chemical Durability Glass Colour Clear / Transparent Reusability Reusable Quantity per Pack 1 Piece Quantity per Case 1 Piece Applications Laboratory Heating, Boiling, Chemical Mixing, Solution Preparation and Routine Laboratory Washing