PYREX 12L Round Bottom Boiling Flask with Short Ring Neck – 4260-12L

The PYREX 12L Round Bottom Boiling Flask is a large-capacity 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 improved mechanical strength. Its round-bottom design promotes uniform heat distribution, making it suitable for industrial, research, educational and analytical laboratory applications. Key Features - 12L Capacity: Ideal 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: Improves mechanical strength and durability. - Stopper Compatibility: Accommodates a No. 11 rubber stopper. - Heat Resistance: Normal working temperature of 230°C. - Chemical Durability: Offers excellent resistance to many laboratory chemicals. - Controlled Wall Thickness: Provides improved thermal shock resistance. - Reusable Construction: Suitable for repeated laboratory operations. Parameter Specification Brand PYREX Manufacturer Corning Product Code 4260-12L Product Type Laboratory Boiling Flask Nominal Capacity 12000mL (12 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 295mm Overall Height Approximately 378mm 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 Boiling, Heating, Mixing and Solution Preparation