PYREX® VISTA™ 250mL Heavy Wall Glass Filtering Flask with Sidearm Tubulation – 70340-250

The PYREX® VISTA™ 250mL Heavy Wall Filtering Flask is a durable laboratory glass flask designed for vacuum filtration, liquid separation, and sample preparation. Manufactured by Corning, the flask features heavy-wall glass construction, a 10mm sidearm tubulation for connecting vacuum tubing, and blue graduations for approximate liquid volume measurement. Its narrow mouth and beaded rim accommodate a compatible rubber stopper for assembling a vacuum filtration system. Suitable for pharmaceutical laboratories, chemical testing facilities, diagnostic laboratories, research institutions, educational laboratories, and quality control applications. Key Features & Specifications - 250mL Capacity: Suitable for small-volume laboratory vacuum filtration and sample collection. - Heavy Wall Glass Construction: Provides additional mechanical strength for filtration applications. - Borosilicate Glass: Offers chemical resistance and thermal durability. - 10mm Sidearm Tubulation: Allows connection to appropriately sized vacuum tubing. - Blue Graduations: Provides approximate liquid volume readings. - 25mL Graduation Intervals: Convenient reference markings for monitoring collected liquid. - Conical Flask Design: Provides a stable container for vacuum filtration procedures. - Flat Bottom: Allows upright placement on laboratory work surfaces. - Narrow Mouth: Accommodates compatible rubber stoppers and filtration accessories. - Beaded Rim: Reinforced neck opening for convenient handling. - ASTM E1406 Type 2: Designed in accordance with the applicable laboratory filtering flask standard. - Reusable Construction: Suitable for repeated laboratory use with proper cleaning and inspection. - Non-Sterile: Supplied without sterilization. - Manufacturer Packaging: Six flasks per pack and twelve flasks per case. Specification Details Brand PYREX® VISTA™ Manufacturer Corning Product Number 70340-250 Supplier Reference 401491 Product Type Heavy Wall Laboratory Filtering Flask Capacity 250mL Material Borosilicate Glass Flask Shape Conical / Erlenmeyer Style Bottom Style Flat Bottom Wall Construction Heavy Wall Neck Style Narrow Mouth Top Style Beaded Rim Sidearm Tubulation Yes Sidearm Outer Diameter Approximately 10mm Graduations Blue Approximate Volume Markings Graduation Interval 25mL Recommended Rubber Stopper Size No. 6 Stopper Included No Sterility Non-Sterile Reusable Yes Applicable Standard ASTM E1406 Type 2 Quantity per Pack 6 Pieces Quantity per Case 12 Pieces Applications Vacuum Filtration, Liquid Separation, Sample Preparation, Chemical Analysis, Laboratory Research