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
Supertek™ Class B Polypropylene Volumetric Flasks with Stoppers
Light in weight, these Class B PP Volumetric Flasks are an excellent break-resistant alternative to glass and come with the newly designed super-stoppers.
Supertek™ Class A, Reusable - Clear Glass Volumetric Flasks with Snap Caps
Calibrated To Contain, these Clear Glass Volumetric Flasks with Snap Caps are calibrated at 20°C. Printed in white color.
Wilmad Labglass FLSK VOL CL A 2000ML ST27 STPR
Volumetric Flask, Class A, To Contain, 2000mL +/- 0.50mL capacity. Stopper Size: 27.Calibrated to contain at 20degreeC.Flask size complies with Federal Specifications NNN-F-289 for Type I, Class A(Unserialized flasks) and ASTM E-288.
Wilmad Labglass FLSK VOL CL A SRLZD 500ML
Volumetric Flask, Class A, To Contain, 500mL +/- 0.20mL capacity. Stopper Size: 19. Calibrated to contain at 20degreeC. Flask has serial number and is supplied with a Certificate of Compliance.
Wilmad Labglass FLSK VOL CL A SRLZD 4ML
Volumetric Flask, Class A, To Contain, 4mL +/- 0.02mL capacity. Stopper Size: 8. Calibrated to contain at 20degreeC. Flask has serial number and is supplied with a Certificate of Compliance.
Wilmad Labglass FLSK VOL CL A 10L ST38 STPR
Volumetric Flask, Class A, To Contain, 10000mL +/- 2.5mL capacity.Stopper Size: 38.Calibrated to contain at 20degreeC.Flask size complies with Federal Specifications NNN-F-289 for Type I, Class A (Unserialized flasks) and ASTM E-288.
Wilmad Labglass FLSK VOL CL A 4000ML ST38 STPR
Volumetric Flask, Class A, To Contain, 4000mL +/- 1.0mL capacity. Stopper Size: 38.Calibrated to contain at 20degreeC.Flask size complies with Federal Specifications NNN-F-289 for Type I, Class A(Unserialized flasks) and ASTM E-288.
Wilmad Labglass FLSK VOL CL A 5000ML ST38 STPR
Volumetric Flask, Class A, To Contain, 5000mL +/- 1.5mL capacity. Stopper Size: 38.Calibrated to contain at 20degreeC.Flask size complies with Federal Specifications NNN-F-289 for Type I, Class A(Unserialized flasks) and ASTM E-288.
Wilmad Labglass FLSK VOL CL A SRLZD 10ML
Volumetric Flask, Class A, To Contain, 10mL +/- 0.02mL capacity. Stopper Size: 9. Calibrated to contain at 20degreeC. Flask has serial number and is supplied with a Certificate of Compliance.
Wilmad Labglass FLSK VOL KOHLRH CL A 100ML
Volumetric Flask, Kohlrausch, Class A, To Contain, 100ml +/- 0.08mL capacity. Calibrated to contain at 20degreeC. The upper neck of the flask is enlarged to permit easy introduction of solids. Flask has serial number.
Wilmad Labglass FLSK VOL CL A SRLZD 200ML
Volumetric Flask, Class A, To Contain, 200mL +/- 0.10mL capacity. Stopper Size: 13. Calibrated to contain at 20degreeC. Flask has serial number and is supplied with a Certificate of Compliance.
Wilmad Labglass FLSK VOL CL A 4000ML PLS STPR
Volumetric Flask, Class A, To Contain, 4000mL +/- 1.0mL capacity. Stopper Size: 38.Calibrated to contain at 20degreeC.Flask size complies with Federal Specifications NNN-F-289 for Type I, Class A(Unserialized flasks) and ASTM E-288.
Wilmad Labglass FLSK VOL CL A 1000ML ST22 STPR
Volumetric Flask, Class A, To Contain, 1000mL +/- 0.30mL capacity. Stopper Size: 22.Calibrated to contain at 20degreeC.Flask size complies with Federal Specifications NNN-F-289 for Type I, Class A(Unserialized flasks) and ASTM E-288.
Wilmad Labglass FLSK VOL CL A 250ML ST16 STPR
Volumetric Flask, Class A, To Contain, 250mL +/- 0.12mL capacity. Stopper Size: 16.Calibrated to contain at 20degreeC.Flask size complies with Federal Specifications NNN-F-289 for Type I, Class A (Unserialized flasks) and ASTM E-288.
Wilmad Labglass FLSK VOL CL A 5000ML PLS STPR
Volumetric Flask, Class A, To Contain, 5000mL +/- 1.5mL capacity. Stopper Size: 38.Calibrated to contain at 20degreeC.Flask size complies with Federal Specifications NNN-F-289 for Type I, Class A(Unserialized flasks) and ASTM E-288.