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
Quality Lab Accessories 900ML CLR RND VOL FLASK
900mL Volumetric Flask with Round Bottom, Class A, Calibrated to 20�C
Ace Glass, Inc. Volumetric flask, class A, 200mL, amber, white lettering, with individual certificate, includes 14/23 polyethylene stopper, sp/2
200mL Class A amber volumetric flask, used to precisely measure specified amounts of liquid in conjunction with the preparation and storage of solutions. These Class A flasks are in accordance with DIN and ISO accuracy standards to contain, and feature white lettering with the individual number and production date lasered onto its base. Each flask is tested individually, and the uncertainty measurement and date of issue are recorded on the Certificate. Flask sequential numbers are 3 letters & 4 numbers (AAA-0001). Includes 14/23 polyethylene stopper. Sold in packs of 2.
CHEMSCIENCE Volumetric Flask, 12.5mL, Serialized and Certified, Heavy Duty, Wide Mouth, PE Stopper- 13, Class A
Volumetric Flask, 12.5mL, Serialized and Certified, Heavy Duty, Wide Mouth, PE Stopper- 13, Class A
Fisherbrand™ PFA Flasks with Screw Caps
Calibrated 'To Contain' within Class A tolerances.
Fisherbrand™ White Line Flasks
Single graduation ring blasted on the neck.
MilliporeSigma™ MilliSolve™ Vacuum Flask
Accessory for Millipore filtration system
Eisco™ Volumetric Flask with Polypropylene Stopper
Volumetric Flask with Polypropylene Stopper. White Graduation. Made of Borosilicate Glass
Eisco™ 5 mL Glass Volumetric Flask with Blue Graduations and Stopper
Volumetric Flask, 5 mL, Class A, ASTM. With a polypropylene stopper and a blue graduation. Made of Borosilicate Glass
Eisco™ Glass Volumetric Flask with Polypropylene Stopper, Sure Trace Certification
Volumetric Flask, Class A, ASTM. Polypropylene Stopper, Single, White Graduation. Made of Borosilicate Glass.
Eisco™ Amber Color Volumetric Flask with Stopper, Sure Trace Certification
Volumetric Flask, Class A Tolerance,Polypropylene Stopper, Blue Graduation. Made of Borosilicate Glass.