PYREX 1L Round Bottom Boiling Flask with Long Neck and Tooled Mouth – 4280-1L

The PYREX 1L Round Bottom Boiling Flask is a durable laboratory glass flask designed for heating, boiling, mixing and chemical solution preparation. Manufactured from No. 7740 borosilicate glass, it features a long neck with a tooled mouth for secure rubber stopper fitting. Its round-bottom construction promotes uniform heat distribution, while its chemical durability and thermal shock resistance make it suitable for research, pharmaceutical, industrial and educational laboratories. Key Features - 1L Capacity: Suitable for laboratory heating, boiling, mixing and solution preparation. - Borosilicate Glass: Manufactured from PYREX No. 7740 glass for chemical durability and heat resistance. - Round Bottom Design: Promotes uniform heat distribution during controlled laboratory heating. - Long Neck: Suitable for use in laboratory apparatus assemblies. - Tooled Mouth: Designed for consistent rubber stopper fitting. - Stopper Compatibility: Accepts a No. 8 rubber stopper. - Thermal Resistance: Normal working temperature of 230°C. - Controlled Wall Thickness: Provides a balance between mechanical strength and thermal shock resistance. - Reusable Construction: Suitable for repeated laboratory applications. - Chemical Durability: Resists many commonly used laboratory chemicals. Parameter Specification Brand PYREX Manufacturer Corning Product Code 4280-1L Product Type Laboratory Boiling Flask Nominal Capacity 1000mL (1 Litre) 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 130mm Overall Height Approximately 241mm 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 12 Pieces Applications Laboratory Heating, Boiling, Mixing and Chemical Solution Preparation