PYREX 100mL Heavy Wall Round Bottom Boiling Flask with Short Neck – 4320C-100

The PYREX 100mL Heavy Wall Round Bottom Boiling Flask is a durable laboratory glass flask designed for heating, boiling, distillation and chemical reactions. It features walls approximately 25–30% thicker than standard PYREX boiling flasks, providing increased mechanical strength. Its round-bottom design promotes uniform heating, while the short neck and 24/40 standard taper joint allow connection to compatible laboratory glassware. Key Features - 100mL Nominal Capacity: Suitable for small-volume laboratory heating, boiling and sample preparation. - Heavy Wall Construction: Glass walls approximately 25–30% thicker than the standard version. - Borosilicate Glass: Durable laboratory glass with excellent thermal and chemical resistance. - Round Bottom Design: Promotes uniform heat distribution during controlled heating. - Short Neck: Compact design for laboratory apparatus assemblies. - 24/40 Standard Taper Joint: Full-length outer joint for connection to compatible laboratory glassware. - Increased Mechanical Strength: Heavy-duty construction provides additional resistance to mechanical stress. - Working Temperature: Normal working temperature of 230°C. - Chemical Durability: Suitable for use with many common laboratory chemicals. - Reusable Construction: Designed for repeated laboratory operations. Parameter Specification Brand PYREX Manufacturer Corning Product Code 4320C-100 Product Type Heavy Wall Laboratory Boiling Flask Nominal Capacity 100mL Material Borosilicate Glass Flask Shape Spherical Bottom Type Round Bottom Neck Style Short Neck Wall Construction Heavy Wall Wall Thickness Approximately 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 65mm Overall Height Approximately 120mm Normal Working Temperature 230°C Thermal Resistance Thermal Shock Resistant Chemical Resistance Excellent Chemical Durability 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