PYREX® VISTA™ 250mL Round Bottom Short Neck Boiling Flask with 24-40 Standard Taper Joint – 70320-250

The PYREX® VISTA™ 250mL Round Bottom Boiling Flask is a durable borosilicate glass laboratory flask designed for boiling liquids, controlled chemical heating, laboratory distillation, and reaction preparation. Manufactured by Corning, this flask features a short neck with a full-length outer 24/40 standard taper joint for connection to compatible condensers, adapters, and laboratory glassware. Its round-bottom design supports uniform heat distribution, while controlled wall thickness provides a balance between mechanical strength and thermal shock resistance. Suitable for pharmaceutical laboratories, chemical testing facilities, research institutions, educational laboratories, and quality control applications. Key Features & Specifications - 250mL Capacity: Suitable for small-volume chemical heating, boiling, and laboratory reactions. - PYREX® Borosilicate Glass: Manufactured from Corning Code 7740 borosilicate glass. - Round Bottom Design: Promotes uniform heat distribution when used with appropriate heating equipment. - Short Neck Configuration: Compact design suitable for laboratory distillation and heating assemblies. - 24/40 Standard Taper Joint: Compatible with appropriately sized laboratory condensers, adapters, and glassware. - Full-Length Outer Joint: Provides a standard connection for compatible laboratory assemblies. - Controlled Wall Thickness: Balances mechanical strength and thermal expansion for improved thermal shock resistance. - ASTM E1403 Design: Manufactured in accordance with the applicable laboratory boiling flask standard. - Clear Glass Body: Allows visual observation of liquids and chemical reactions. - Reusable Construction: Suitable for repeated laboratory procedures with proper cleaning. - Non-Sterile: Supplied without sterilization. - Stopper Not Included: Compatible stoppers and connecting accessories are purchased separately. - Manufacturer Packaging: Two flasks per pack and four flasks per case. Specification Details Brand PYREX® VISTA™ Manufacturer Corning Product Number 70320-250 Supplier Reference 401491 Product Type Laboratory Boiling Flask Capacity 250mL Material Code 7740 Borosilicate Glass Flask Shape Round Bottom Neck Style Short Neck Number of Necks 1 Joint Type Standard Taper Joint Size 24/40 Joint Configuration Full-Length Outer Joint Colour Clear / Transparent Stopper Included No Sterility Non-Sterile Reusable Yes Applicable Standard ASTM E1403 Quantity per Pack 2 Pieces Quantity per Case 4 Pieces Applications Chemical Heating, Boiling, Distillation, Laboratory Reactions, Sample Preparation