PYREX 50mL Pear-Shaped Boiling Flask with 14-20 Standard Taper Joint – 4315-50

The PYREX 50mL Pear-Shaped Boiling Flask is a precision laboratory glass flask designed for small-volume heating, boiling, distillation and chemical solution preparation. Manufactured from durable No. 7740 borosilicate glass, it features a full-length 14/20 outer standard taper joint for connection to compatible laboratory glassware. Its pear-shaped design, excellent chemical durability and thermal shock resistance make it suitable for research, pharmaceutical, analytical and educational laboratories. Key Features - 50mL Capacity: Ideal for small-volume heating, distillation and chemical reactions. - Borosilicate Glass: Manufactured from PYREX No. 7740 glass for excellent chemical durability and heat resistance. - Pear-Shaped Design: Suitable for small-scale distillation and laboratory sample preparation. - 14/20 Standard Taper Joint: Full-length outer ground-glass joint for compatible laboratory assemblies. - Short Neck: Compact construction for laboratory equipment setups. - Heat Resistance: Normal working temperature of 230°C. - Thermal Shock Resistance: Carefully controlled wall thickness improves resistance to thermal stress. - Chemical Durability: Resistant to many commonly used laboratory chemicals. - Compact Dimensions: Approximately 46mm outside diameter and 87mm overall height. - Reusable Construction: Designed for repeated laboratory applications. Parameter Specification Brand PYREX Manufacturer Corning Product Code 4315-50 Product Type Laboratory Boiling Flask Nominal Capacity 50mL Material No. 7740 Borosilicate Glass Flask Shape Pear-Shaped Bottom Design Rounded Neck Style Short Neck Top Style Standard Taper Joint Joint Size 14/20 Joint Type Full-Length Outer Standard Taper Joint Outside Diameter Approximately 46mm Overall Height Approximately 87mm 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 Sample Preparation