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
Fisherbrand™ Clear Borosilicate Glass Class A Volumetric Flask with Stopper
Manufactured from Borosilicate Glass and complies with ISO 1042 and DIN 12664. Fisherbrand™ Clear Borosilicate Glass Class A Volumetric Flask with Stopper includes one mark graduation and interchangeable polyethylene stopper. The Fisherbrand™ 'Batch Certificate of Compliance' is downloadable for this item from the 'Documentation' tab.
BRAND™ Blaubrand™ Class A Borosilicate Glass Volumetric Flasks with Polypropylene Stopper
Constructed of Borosilicate Glass and complies with DIN EN ISO 1042 standards. BRAND™ Blaubrand™ Class A Borosilicate Glass Volumetric Flask with Polypropylene Stopper is available with narrow neck or wide neck in a variety of sizes. DE-M marking on the neck provides quick and accurate volume check. Polypropylene stopper included.
Pyrex™ Borosilicate Glass Class A Volumetric Flask
Manufactured from chemically resistant Pyrex™ Borosilicate Glass. Pyrex™ Borosilicate Glass Class A Volumetric Flask includes white enamel inscriptions for easy volume assessment and a polyethylene stopper. Complies with ISO 1042 and DIN 12664, is calibrated to the tolerance required by the United States Pharmacopoeia (USP,) and Conformity 'H' certified.
BRAND™ Blaubrand™ Class A Borosilicate Glass Volumetric Flasks with Glass Stopper
Constructed of Borosilicate Glass and complies with DIN EN ISO 1042 standards. BRAND™ Blaubrand™ Class A Volumetric Flask with Glass Stopper is available in both narrow neck and wide neck options in a variety of sizes. DE-M marking on neck provides quick and accurate volume check.
Pyrex™ Borosilicate Glass Class A Certified Volumetric Flask
Manufactured from borosilicate glass for corrosion free-performance. Pyrex™ Borosilicate Glass Class A Certified Volumetric Flask features white enamel inscriptions for easy volume assessment. Includes polyethylene stopper. Conformity 'H' certified, complies with ISO 1042 and DIN 12664 and is calibrated to the tolerances required by the United States Pharmacopoeia (USP.)
BRAND™ Blaubrand™ ETERNA™ Class A Volumetric Flasks
Constructed of Borosilicate Glass and complies with DIN EN ISO 1042 standards. BRAND™ Blaubrand™ ETERNA™ Class A Volumetric Flasks are calibrated to contain a precise amount of liquid at a specific temperature. Narrow neck and wide neck options available in a variety of sizes. Includes polypropylene stopper and DE-M marking.
BRAND™ Class A PMP Volumetric Flask
Autoclaving up to 121°C will not cause permanently exceeded error limits. Cleaning up to max. 60°C is recommended to preserve marks and inscriptions.
DWK Life Sciences DURAN™ Volumetric Flask, Class A, batch certificate
DURAN™ volumetric flasks are used for the accurate measurement of specific quantities of liquids. They are volumetric analysis aids in quantitative laboratory work. These volumetric flasks are certified by batch.
Fisherbrand™ Amber Borosilicate Glass Class A Volumetric Flask with Stopper
Amber Borosilicate Glass Volumetric Flask includes interchangeable polyethylene stopper.
BRAND™ Blaubrand™ Borosilicate Glass Class A USP Volumetric Flask
Manufactured from Class A Borosilicate Glass and complies with DIN EN ISO 1042 standards.BRAND™ Blaubrand™ Borosilicate Glass Class A USP Volumetric Flask includes polypropylene stopper and USP batch certificate. DE-M Marking provides easy volume check.
Fisherbrand™ Clear Borosilicate Glass Volumetric Flasks
Conduct experiments in the laboratory with Fisherbrand™ Clear Borosilicate Glass Volumetric Flasks. They are graduated for precise measurement.
BRAND™ Class A Borosilicate Volumetric Flask with Polypropylene Stopper
Borosilicate volumetric flask with polypropylene stopper and ISO individual certificate.
Brand™ Blaubrand™ Amber Borosilicate Glass Class A Volumetric Flask
Manufactured from Amber Borosilicate Glass and complies with DIN EN ISO 1042 standards. BRAND™ Blaubrand™ Amber Borosilicate Glass Class A Volumetric Flask includes a polypropylene stopper, but is interchangeable with amber glass stopper. The dark flask protects against deterioration of light-sensitive liquids. Also includes batch number and certificate. USP individual- and USP batch certificate are also available by request.
Hirschmann™ Class A Volumetric Flasks with Poly Stopper, Blue Graduation
Allows for precise, safe liquid measurement and handling in the laboratory. Hirschmann Instruments™ Class A Volumetric Flasks with Poly Stopper, Blue Graduation are manufactured from durable DURAN™ glass tubing.
Hirschmann™ Glass Trapezoidal Volumetric Flask with Polyethylene Stopper
Manufactured using class A, DURAN™ glass