PYREX 100mL Heavy Wall Round Bottom Boiling Flask with Short Neck and 24/40 Joint – 4320C-100

The PYREX 100mL Heavy Wall Short Neck Boiling Flask is a durable laboratory glass flask designed for heating, boiling, distillation and chemical solution preparation. Manufactured from borosilicate glass, 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 secure connections to compatible laboratory apparatus. Key Features - 100mL Capacity: Ideal for small-volume laboratory heating, boiling and chemical reactions. - Heavy Wall Construction: Approximately 25–30% thicker walls than standard PYREX boiling flasks. - Borosilicate Glass: Excellent chemical durability and resistance to thermal shock. - Round Bottom Design: Supports uniform heat distribution during controlled heating. - Short Neck: Compact design suitable for laboratory distillation assemblies. - 24/40 Standard Taper Joint: Full-length outer ground-glass joint for compatible laboratory apparatus. - Enhanced Mechanical Strength: Heavy-duty construction improves durability during laboratory handling. - Heat Resistance: Manufacturer-stated normal working temperature of 230°C. - Compact Dimensions: Approximately 65mm outside diameter and 120mm overall height. - Reusable Construction: Suitable for repeated laboratory applications. 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 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 Resistant to thermal shock under appropriate laboratory conditions 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