PYREX® VISTA™ 1000mL Class B Volumetric Flask with Polyethylene Snap Cap – 70581-1L

The PYREX® VISTA™ 1000mL Class B Volumetric Flask is a reusable laboratory glass instrument designed for preparing standard solutions, sample dilution, chemical analysis, and routine volumetric measurements. Manufactured by Corning, this flask features a long neck with a permanent calibration line, a stable flat-bottom design, and a blue polyethylene snap cap for convenient closure. Its Class B accuracy makes it suitable for routine laboratory applications where Class A precision is not required. Ideal for pharmaceutical laboratories, chemical testing facilities, diagnostic laboratories, research institutions, educational laboratories, and quality control departments. Key Features & Specifications - 1000mL (1 Litre) Capacity: Suitable for preparing larger-volume laboratory solutions. - Class B Accuracy: Capacity tolerances are twice those specified for comparable Class A volumetric glassware. - Single Calibration Line: Sharp, permanent marking for preparing solutions to a defined volume. - Laboratory Glass Construction: Transparent and reusable glass body. - Polyethylene Snap Cap: Supplied with a blue low-density polyethylene (LDPE) closure. - No. 1000 Snap Cap: Compatible replacement caps are available from Corning's 7666 series. - Long Neck Design: Allows careful adjustment of liquid level to the calibration mark. - Large Blue Marking Spot: Provides space for laboratory identification and labelling. - Flat Bottom: Allows stable upright positioning on laboratory work surfaces. - Economy Volumetric Design: Suitable for routine solution preparation and dilution. - Reusable Construction: Suitable for repeated laboratory procedures with proper cleaning. - Non-Sterile: Supplied without sterilization. - Manufacturer Packaging: One flask per pack and six flasks per case. Specification Details Brand PYREX® VISTA™ Manufacturer Corning Product Number 70581-1L Previous Catalogue Number 5581-1L Supplier Reference 401491 Product Type Volumetric Laboratory Flask Capacity 1000mL (1 Litre) Accuracy Classification Class B Calibration Mark Single Permanent Graduation Line Flask Material Laboratory Glass Flask Shape Volumetric Bottom Style Flat Bottom Neck Style Long Neck Top Style Snap Cap Cap Material Low-Density Polyethylene (LDPE) Cap Colour Blue Snap Cap Number 1000 Replacement Cap Series Corning 7666 Snap Cap Included Yes Glass Stopper Included No Sterility Non-Sterile Reusable Yes Quantity per Pack 1 Piece Quantity per Case 6 Pieces Applications Standard Solution Preparation, Sample Dilution, Chemical Analysis, Laboratory Testing