PYREX 25mL Round Bottom Boiling Flask with Short Neck and 19-22 Standard Taper Joint – 4320B-25

The PYREX 25mL Short Neck Round Bottom Boiling Flask is a precision laboratory glass flask designed for small-volume heating, boiling, distillation and chemical solution preparation. Manufactured from durable borosilicate glass, it features a short neck with a full-length 19/22 standard taper joint for secure connection to compatible laboratory apparatus. Its spherical design supports uniform heating, making it suitable for research, pharmaceutical, analytical and educational laboratories. Key Features - 25mL Capacity: Suitable for small-volume laboratory heating, chemical reactions and sample preparation. - Borosilicate Glass: Provides good thermal shock resistance and chemical durability. - Round Bottom Design: Promotes uniform heat distribution during controlled heating. - Short Neck: Compact configuration for laboratory glassware assemblies. - 19/22 Standard Taper Joint: Full-length ground-glass joint for connection to compatible laboratory equipment. - Compact Dimensions: Approximately 42mm outside diameter and 72mm overall height. - Chemical Resistance: Suitable for use with many common laboratory chemicals. - Reusable Construction: Designed for repeated laboratory operations. - Versatile Applications: Suitable for laboratory boiling, heating, distillation and solution preparation. Parameter Specification Brand PYREX Manufacturer Corning Product Code 4320B-25 Product Type Laboratory Boiling Flask Nominal Capacity 25mL Material 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 Standard Taper Joint Outside Diameter Approximately 42mm Overall Height Approximately 72mm 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