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
Chemglass Life Sciences 20 +/- 0.08mL Capacity, #13 Stopper Size, Approx 130mm Height with Stopper
Volumetric Flask, 20 +/- 0.08mL Capacity, #13 Stopper Size, Approx 130mm Height with Stopper. Wide mouth design facilitates mixing, pipette access, sampling and filling. Unique Flat Bottom Interior permits the use of a standard stir bar. Large permanent white letters make the capacity clearly visible. Flasks are calibrated "To Contain" at Class A tolerances, per ASTM E288 specifications. Supplied complete with a CG-8740 Polyethylene stopper.PLEASE NOTE: VOLUMETRIC FLASK CAPACITIES OF 20mL, 500mL, 1,000mL, and 2,000mL ARE NOT INCLUDED IN THE ASTM E288 SPECIFICATIONS. HOWEVER, FLASKS ARE CALIBRATED TO CLASS A TOLERANCES.
Chemglass Life Sciences 5000mL Volumetric Flask, Class A, #34/35 Outer Stopper Neck, PE Stopper
5000mL Volumetric Flask, Class A, #34/35 Outer Stopper Neck, PE Stopper. Flasks are manufactured to conform to Federal Specifications NNN-F-289 for Type 1, Class “A” unserialized flasks and ASTM E-288. Supplied complete with one closed bottom polyethylene stopper. For additional stoppers, see CG-8740.
Chemglass Life Sciences 250 +/- 0.20mL Capacity, #19 Stopper Size, Approx 210mm Height with Stopper
Volumetric Flask, 250 +/- 0.20mL Capacity, #19 Stopper Size, Approx 210mm Height with Stopper. Wide mouth design facilitates mixing, pipette access, sampling and filling. Unique Flat Bottom Interior permits the use of a standard stir bar. Large permanent white letters make the capacity clearly visible. Flasks are calibrated "To Contain" at Class A tolerances, per ASTM E288 specifications. Supplied complete with a CG-8740 Polyethylene stopper.PLEASE NOTE: VOLUMETRIC FLASK CAPACITIES OF 20mL, 500mL, 1,000mL, and 2,000mL ARE NOT INCLUDED IN THE ASTM E288 SPECIFICATIONS. HOWEVER, FLASKS ARE CALIBRATED TO CLASS A TOLERANCES.
Chemglass Life Sciences 100mL Volumetric Flask, Class A, #13 Outer Stopper Neck, Mixing Bulb
100mL Volumetric Flask, Class A, #13 Outer Stopper Neck, Mixing Bulb. Similar to CG-1600 but with the addition of a mixing bulb between the calibration line and the stopper. The mixing bulb contains approximately one tenth of the flask capacity and aids in the mixing or dissolving of the flask contents. Supplied complete with one solid glass pennyhead stopper. For additional stoppers, see CG-3018.
Chemglass Life Sciences 50mL Volumetric Flask, Class A, #9 Outer Stopper Neck, Mixing Bulb
50mL Volumetric Flask, Class A, #9 Outer Stopper Neck, Mixing Bulb. Similar to CG-1600 but with the addition of a mixing bulb between the calibration line and the stopper. The mixing bulb contains approximately one tenth of the flask capacity and aids in the mixing or dissolving of the flask contents. Supplied complete with one solid glass pennyhead stopper. For additional stoppers, see CG-3018.
Hach Company 100mL Flask-volumet-polypro
Polypropylene flask and screw cap Durable with excellent chemical resistance with the same accuracy as glass Permanent color graduation line with marking spot Calibrated to contain/deliver at 20 C The 200/203 capacity flask has dual marks useful in DO determination via Winkler Titration
Foxx Life Sciences EZBio Titanium 10L Round Carboy with 4" TC Sanitary Neck, No Spigot, Polypropylene (PP), 10L Carboy, Powder Carboy, Mixing, Autoclavable, Sterile, 1/CS
EZBio Carboy with Sanitary Neck is a fluid and powder handling container designed for bioprocessing, laboratory, and pharmaceutical applications. Designed for closed-system fluid, it features 4” and 6” tri-clamp sanitary necks, ensuring contamination-free connections in cleanroom environments. Available in round and rectangular formats, the round sanitary carboy supports efficient mixing, while the rectangular design provides space-saving storage. Constructed from high-purity plastic this tri-clamp carboy delivers reliable performance for bioprocess production, buffer and media preparation, sampling, and waste collection—making it a trusted solution across upstream and downstream workflows.
Features
4” and 6” tri-clamp sanitary necks for closed-loop operation
Materials comply with USP Class VI standards
BPA-free, gamma-sterilizable
Wide-mouth ergonomic design for easy filling and cleaning
Ideal for buffer/media prep, powder transfer, and waste collection
Foxx Life Sciences Borosil® Wide Mouth Class A Volumetric Flasks with Interchangeable Solid Glass Stopper (19/26), Individual Certificate, 200 mL, 10/CS
Borosil® Wide Mouth Class A Volumetric Flasks are individually calibrated by automatic, laser-controlled calibration equipment. Supplied with standard taper glass stoppers. Flask are Comply with ASTM E288, ClassA. 20mL option is not covered in ASTM. 5mL, 10mL, and 20mL options have a trapezoidal shape for improved stability. Available from 5mL to 1L. Larger Class A Flasks available in Product Family 5645. In collaboration with Borosil Glass Works, Foxx Life Sciences is proud to bring the outstanding quality of Borosil® Type 3.3 Borosilicate glassware to North America for the first time. Manufactured from the same USP Type 1 borosilicate glass that North American scientists have come to trust, Borosil® Laboratory Glassware offers unparalleled mechanical strength, clarity, and reliability at competitive prices. And thanks to a unique annealing process, Borosil® Glassware is stress-free and incredibly resistant to thermal shock.
Foxx Life Sciences Borosil Wide Mouth Class A Volumetric Flasks with Glass Pennyhead Stoppers, Batch Certificate, 50mL, 10/CS
Borosil Wide Mouth Class A Volumetric Flasks are individually calibrated by automatic, laser-controlled calibration equipment. Supplied with standard taper glass stoppers. Flasks comply with ASTM E-288, Class A. 20mL option is not covered in ASTM. 5mL, 10mL, and 20mL options have a trapezoidal shape for improved stability. Avail. from 5mL to 250mL. Larger Class A Flasks Avail. in Product Family 5645. In collaboration with Borosil Glass Works, Foxx Life Sciences is proud to bring the outstanding quality of Borosil Type 3.3 Borosilicate glassware to North America for the first time. Manufactured from the same USP Type 1 borosilicate glass that North American scientists have come to trust, Borosil Laboratory Glassware offers unparalleled mechanical strength, clarity, and reliability at competitive prices. And thanks to a unique annealing process, Borosil Glassware is stress-free and incredibly resistant to thermal shock.
Foxx Life Sciences Borosil Wide Mouth Class A Volumetric Flasks with Glass Pennyhead Stoppers, Batch Certificate, 5mL, 5/CS
Borosil Wide Mouth Class A Volumetric Flasks are individually calibrated by automatic, laser-controlled calibration equipment. Supplied with standard taper glass stoppers. Flasks comply with ASTM E-288, Class A. 20mL option is not covered in ASTM. 5mL, 10mL, and 20mL options have a trapezoidal shape for improved stability. Avail. from 5mL to 250mL. Larger Class A Flasks Avail. in Product Family 5645. In collaboration with Borosil Glass Works, Foxx Life Sciences is proud to bring the outstanding quality of Borosil Type 3.3 Borosilicate glassware to North America for the first time. Manufactured from the same USP Type 1 borosilicate glass that North American scientists have come to trust, Borosil Laboratory Glassware offers unparalleled mechanical strength, clarity, and reliability at competitive prices. And thanks to a unique annealing process, Borosil Glassware is stress-free and incredibly resistant to thermal shock.
Foxx Life Sciences Borosil Wide Mouth Class A Volumetric Flasks with Glass Pennyhead Stoppers, Batch Certificate, 200mL, 10/CS
Borosil Wide Mouth Class A Volumetric Flasks are individually calibrated by automatic, laser-controlled calibration equipment. Supplied with standard taper glass stoppers. Flasks comply with ASTM E-288, Class A. 20mL option is not covered in ASTM. 5mL, 10mL, and 20mL options have a trapezoidal shape for improved stability. Avail. from 5mL to 250mL. Larger Class A Flasks Avail. in Product Family 5645. In collaboration with Borosil Glass Works, Foxx Life Sciences is proud to bring the outstanding quality of Borosil Type 3.3 Borosilicate glassware to North America for the first time. Manufactured from the same USP Type 1 borosilicate glass that North American scientists have come to trust, Borosil Laboratory Glassware offers unparalleled mechanical strength, clarity, and reliability at competitive prices. And thanks to a unique annealing process, Borosil Glassware is stress-free and incredibly resistant to thermal shock.
Foxx Life Sciences Borosil Wide Mouth Class A Volumetric Flasks with Glass Pennyhead Stoppers, Batch Certificate, 250mL, 10/CS
Borosil Wide Mouth Class A Volumetric Flasks are individually calibrated by automatic, laser-controlled calibration equipment. Supplied with standard taper glass stoppers. Flasks comply with ASTM E-288, Class A. 20mL option is not covered in ASTM. 5mL, 10mL, and 20mL options have a trapezoidal shape for improved stability. Avail. from 5mL to 250mL. Larger Class A Flasks Avail. in Product Family 5645. In collaboration with Borosil Glass Works, Foxx Life Sciences is proud to bring the outstanding quality of Borosil Type 3.3 Borosilicate glassware to North America for the first time. Manufactured from the same USP Type 1 borosilicate glass that North American scientists have come to trust, Borosil Laboratory Glassware offers unparalleled mechanical strength, clarity, and reliability at competitive prices. And thanks to a unique annealing process, Borosil Glassware is stress-free and incredibly resistant to thermal shock.
Foxx Life Sciences Borosil Amber Light-Blocking Wide Mouth Class A Volumetric Flasks with Glass Pennyhead Stoppers, Batch Certificate, 50mL, 10/CS
Borosil Amber Wide Mouth Class A Volumetric Flasks are individually calibrated by automatic, laser-controlled calibration equipment. Supplied with standard taper glass stoppers. Flasks comply with ASTM E-288, Class A. 20mL option is not covered in ASTM. 5mL, 10mL, and 20mL options have a trapezoidal shape for improved stability. Avail. from 5mL to 250mL. Amber protects from 300nm to 500nm. Larger Amber Class A Flasks Avail. in Product Family 5655. In collaboration with Borosil Glass Works, Foxx Life Sciences is proud to bring the outstanding quality of Borosil Type 3.3 Borosilicate glassware to North America for the first time. Manufactured from the same USP Type 1 borosilicate glass that North American scientists have come to trust, Borosil Laboratory Glassware offers unparalleled mechanical strength, clarity and reliability at competitive prices. And thanks to a unique annealing process, Borosil Glassware is stress-free and incredibly resistant to thermal shock.