PYREX 50mL Heavy Wall Round Bottom Boiling Flask with Short Neck and 24-40 Joint – 4320C-50

The PYREX 50mL Heavy Wall Round Bottom Boiling Flask is a durable borosilicate glass flask designed for small-volume laboratory heating, boiling, distillation and chemical preparation. Featuring walls 25–30% thicker than standard PYREX boiling flasks, it provides increased mechanical strength. Its short neck and 24/40 standard taper joint enable secure connections to compatible laboratory apparatus, making it suitable for research, pharmaceutical, chemical and educational laboratories. Key Features - 50mL Capacity: Suitable for small-volume laboratory heating, boiling and chemical reactions. - Heavy Wall Construction: Glass walls 25–30% thicker than standard versions for increased mechanical strength. - Borosilicate Glass: Provides excellent chemical durability and thermal resistance. - Round Bottom Design: Promotes uniform heat distribution during controlled heating. - Short Neck: Compact construction suitable for laboratory glassware assemblies. - 24/40 Standard Taper Joint: Full-length outer ground-glass joint for compatible laboratory equipment. - Heat Resistance: Normal working temperature of 230°C. - Compact Dimensions: Approximately 49mm outside diameter and 61mm overall height. - Reusable Construction: Suitable for repeated laboratory applications. - Joint Compatibility: Can be connected to other joint sizes using suitable adapters, including Corning series 8800, 8820 and 8825. Parameter Specification Brand PYREX Manufacturer Corning Product Code 4320C-50 Product Type Heavy Wall Laboratory Boiling Flask Nominal Capacity 50mL Material Borosilicate Glass Flask Shape Spherical Bottom Type Round Bottom Neck Style Short Neck Wall Construction Heavy Wall Relative Wall Thickness 25–30% thicker than standard version Top Style Standard Taper Joint Joint Size 24/40 Joint Type Full-Length Outer Standard Taper Joint Outside Diameter Approximately 49mm Overall Height Approximately 61mm Normal Working Temperature 230°C Thermal Resistance Resistant to thermal shock under suitable laboratory conditions Chemical Resistance Resistant to many common laboratory chemicals Glass Colour Clear / Transparent Stopper Included No Reusability Reusable Manufacturer Quantity per Pack 1 Piece Manufacturer Quantity per Case 1 Piece Applications Laboratory Heating, Boiling, Distillation, Chemical Reactions and Solution Preparation