PYREX 500mL Heavy Wall Round Bottom Boiling Flask with Short Neck and 24-40 Joint – 4320C-500

The PYREX 500mL Heavy Wall Round Bottom Boiling Flask is a durable borosilicate glass flask designed for laboratory heating, boiling, distillation and chemical solution preparation. Its walls are approximately 25–30% thicker than those of standard PYREX boiling flasks, providing increased mechanical strength. Featuring a short neck and 24/40 standard taper joint, it is suitable for research, pharmaceutical, industrial and educational laboratory applications. Key Features - 500mL Capacity: Suitable for laboratory heating, boiling and chemical reactions. - Heavy Wall Construction: Glass walls approximately 25–30% thicker than standard versions. - Borosilicate Glass: Provides excellent chemical durability and thermal resistance. - Round Bottom Design: Promotes uniform heat distribution during controlled heating. - Short Neck: Compact design for laboratory glassware assemblies. - 24/40 Standard Taper Joint: Full-length outer ground-glass joint for compatible laboratory equipment. - Enhanced Mechanical Strength: Heavy-duty construction improves durability during laboratory handling. - Heat Resistance: Normal working temperature of 230°C. - Dimensions: Approximately 102mm outside diameter and 160mm overall height. - Reusable Construction: Suitable for repeated laboratory applications. Parameter Specification Brand PYREX Manufacturer Corning Product Code 4320C-500 Product Type Heavy Wall Laboratory Boiling Flask Nominal Capacity 500mL 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 102mm Overall Height Approximately 160mm Normal Working Temperature 230°C Thermal Resistance Resistant to thermal shock under appropriate 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