PYREX 100mL Round Bottom Boiling Flask with Short Neck and 19-22 Joint – 4320B-100

The PYREX 100mL Short Neck Boiling Flask is a durable laboratory glass flask designed for heating, boiling, distillation and chemical solution preparation. Manufactured from high-quality No. 7740 borosilicate glass, it features a short neck with a full-length 19/22 standard taper joint for connection to compatible laboratory apparatus. Its round-bottom design promotes uniform heat distribution, making it suitable for research, pharmaceutical, analytical and educational laboratories. Key Features - 100mL Capacity: Suitable for small-volume laboratory heating, boiling and chemical reactions. - Borosilicate Glass: Manufactured from PYREX No. 7740 glass for excellent chemical and thermal resistance. - Round Bottom Design: Promotes uniform heat distribution during controlled heating. - Short Neck: Compact construction for laboratory apparatus assemblies. - 19/22 Standard Taper Joint: Full-length outer ground-glass joint for secure connection to compatible laboratory glassware. - Controlled Wall Thickness: Balances mechanical strength and resistance to thermal shock. - Heat Resistance: Normal working temperature of 230°C. - Chemical Durability: Resistant to many commonly used laboratory chemicals. - Dimensions: Approximately 65mm outside diameter and 95mm overall height. - Reusable Construction: Suitable for repeated laboratory applications. Parameter Specification Brand PYREX Manufacturer Corning Product Code 4320B-100 Product Type Laboratory Boiling Flask Nominal Capacity 100mL Material No. 7740 Borosilicate Glass Flask Shape Spherical Bottom Type Round Bottom Neck Style Short Neck Top Style Standard Taper Joint Joint Size 19/22 Joint Type Full-Length Outer Standard Taper Joint Outside Diameter Approximately 65mm Overall Height Approximately 95mm 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 2 Pieces Manufacturer Quantity per Case 12 Pieces Applications Laboratory Heating, Boiling, Distillation, Chemical Reactions and Solution Preparation