Volumetric Flasks
Volumetric Flasks
Volumetric flasks, also called graduated flasks or measuring flasks, are items of laboratory glassware or plasticware calibrated and labelled to contain a specified volume of reagents, solvents, or other liquids.
Volumetric flasks are often used to create chemical solutions. Many are manufactured and calibrated in ISO/IEC-certified laboratories and meet different ASTM and ISO standards of quality and dependability.
Volumetric flasks are typically pear shaped, with a flat base and long neck. They typically feature a single graduation ring etched or marked on the neck to define the specified fill level. They may also be supplied with a glass or plastic stopper.
Volumetric flasks come in capacities from 1 mL to 4 L and may be manufactured from either glass (borosilicate or soda lime) or autoclavable and chemical-resistant plastics such as polymethylpentene, polypropylene, or PFA. Glass versions may be clear, colored, or coated for handling light-sensitive liquids. Plastic flasks offer the advantage of being break-resistant and may also offer lower extractable profiles.
A Kohlrausch volumetric flask is modified to help transfer large amounts of solids into the flask for dissolution; it is commonly used to measure the sugar content of sugar beets. A Le Chatelier flask is designed for specific gravity determinations.
What Is the Difference Between Class A and B Volumetric Flasks?
Class A flasks are manufactured to high standards of precision for critical analytical work (often with a unique serial number for traceability), whereas Class B flasks offer less accuracy and are therefore more suitable for less demanding applications such as qualitative or educational use. Volumetric flasks are important items in a range of laboratory environments in both research and industry.
What Are Typical Applications of Volumetric Flasks?
• Preparation of standard solutions
• Preparation of series dilutions
• Filling, measuring, and decanting precise volumes of liquid
• Calibrating other containers and devices
Eisco™ Class A Glass Volumetric Flask with Stopper

Class A Glass Volumetric Flask with Stopper - Features a flat bottom design, single graduation, and blue print markings.

Eisco™ Class A Glass Volumetric Flasks with Snap Cap

Eisco™ Class A Glass Volumetric Flasks with Snap Cap features a flat bottom design, single graduation, and white print markings.

PYREX™ Class A Volumetric Flask with Glass Standard Taper Stopper

Improved lab convenience, broad selection and precise volume measurement as well as being manufactured to Class A tolerances

Eisco™ Class A Volumetric Flasks - ASTM

Class A Volumetric Flasks are manufactured according to ASTM standards, and include interchangeable polypropylene stoppers.
Eisco™ Class A Volumetric Flasks with Individual Work Certificates, USP

Class A Volumetric Flasks are USP-certified, and include interchangeable polypropylene stoppers and individual work certificates.
Eisco™ Polypropylene Volumetric Flask with Screw Cap

Flasks are constructed of high quality, durable polypropylene and fitted with a screw cap.
Eisco™ Volumetric Flask - Class 'B', Blue Graduation, Socket Size 12/21

Borosilicate glass with one graduation mark.
Eisco™ Class A Glass Volumetric Flasks with Polypropylene Stopper

Eisco™ Class A Glass Volumetric Flasks with Polypropylene Stopper features a single graduation mark and a fitted chemical resistant stopper.
Eisco™ Class B Glass Volumetric Flask with Snap Cap

Eisco™ Class B Glass Volumetric Flask with Snap Cap features a flat bottom design, single graduation, and white print markings.
Eisco™ Safety Pack Volumetric Flask Sets - Class A, ASTM

Multi-piece Safety Pack Volumetric Flasks feature single white graduation line and glass penny stoppers.
Eisco™ Class B Glass Volumetric Flask with Glass Stopper

Class B Glass Volumetric Flask with Glass Stopper features a single graduation and blue markings.
Eisco™ Class B Glass Volumetric Flasks with Snap Cap

Eisco™ Class B Glass Volumetric Flasks with Snap Cap features a flat bottom design, single graduation, and blue print markings.
Eisco™ Safety Pack Premium Glassware Set

Safety Pack Premium Glassware Set includes 3 low form beakers, 3 Class-A graduated cylinders, and 3 Erlenmeyer flasks.
Eisco™ Class A ASTM Glass Volumetric Flask with Polypropylene Stopper

Made of high quality Borosilicate 3.3 glass in compliance with ASTM-E288 standards. Features a single, blue graduation mark and chemically resistant polypropylene stopper.
Eisco™ Class A Clear Volumetric Flasks with Individual Work Certificates

Class A Volumetric Flasks include interchangeable polypropylene stoppers and individual work certificates.
Eisco™ Class A Amber Volumetric Flasks with Individual Work Certificates

Class A Volumetric Flasks include interchangeable polypropylene stoppers and individual work certificates. Amber glass helps to protect light sensitive contents.
Eisco™ Glass Volumetric Flasks with Snap Cap, Class A

Volumetric flask made from high quality borosilicate glass. Designed with a flat bottom and single graduation mark. Fit with a blue plastic snap cap. Class A. Conforms to ASTM-E288 standard.
Eisco™ Glass Volumetric Flasks with Polypropylene Stopper, Class A

Glass volumetric flasks with polypropylene stopper. Made from high quality borosilicate glass, polypropylene stoppers are acid resistant. Flasks are class A certified and individually calibrated in an ISO 17025 compliant calibration laboratory. Both flask and stopper can be autoclaved.
Eisco™ Volumetric Flask with Polypropylene Stopper

Eisco™ Volumetric Flask with Polypropylene Stopper are made of high quality borosilicate glass and include an acid resistant stopper.
Eisco™ Class A Glass Volumetric Flasks with White Graduations

Eisco™ Class A Glass Volumetric Flasks with White Graduations feature a flat bottom design, interchangeable solid glass stoppers, and single graduation.
Eisco™ Class B Glass Volumetric Flasks with White Graduations

Eisco™ Class B Glass Volumetric Flasks with White Graduations feature a flat bottom design, interchangeable solid glass stoppers, and single graduation.
Eisco™ Class B Glass Volumetric Flasks with Polypropylene Stopper

Eisco™ Class B Glass Volumetric Flasks with Polypropylene Stopper feature one graduation mark, a fitted chemical resistant stopper, and blue printed markings.
Eisco™ Class B Volumetric Flask

Eisco™ Class B Volumetric Flask without stopper is constructed of high quality Borosilicate 3.3 Glass and features a single graduation mark.
Eisco™ Class A Amber Glass Volumetric Flasks with Polypropylene Stoppers

Eisco™ Class A Amber Glass Volumetric Flasks with Polypropylene Stoppers protect light sensitive chemicals and feature a single graduation mark.
Corning™ Class A Reusable Volumetric Flasks

Autoclaved to 121°C.
Corning™ Class B Reusable Polypropylene Volumetric Flasks

Supplied with tapered polypropylene stopper with an individually calibrated graduation line.
Corning™ Class A Reusable PFA Volumetric Flasks with Screw Cap

Autoclaved to 121°C
PYREX™ VISTA™ Class B Volumetric Flasks with Snap Caps

Capacity tolerances are twice those specified for Class A volumetric ware.
PYREX™ VISTA™ Class A Volumetric Flask

Necks are tooled for standard taper glass stoppers.
DWK Life Sciences Kimble™ ValueWare™ Volumetric Flasks, Class B, with Snap Cap

Calibrated “To Contain.”
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