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 50 +/- 0.08mL Capacity, #13 Stopper Size, Approx 150mm Height with Stopper
Volumetric Flask, 50 +/- 0.08mL Capacity, #13 Stopper Size, Approx 150mm 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 2mL Micro Volumetric Flask, PTFE Stopper, Tolerance: +-0.015mL
2mL Micro Volumetric Flask, PTFE Stopper, Tolerance: ¿0.015mL. Similar to CG-1603, but with PTFE stopper.
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.
Foxx Life Sciences Borosil Amber Light-Blocking Wide Mouth Class A Volumetric Flasks with Glass Pennyhead Stoppers, Batch Certificate, 200mL, 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.
Chemglass Life Sciences 250mL Volumetric Flask, Class A, #16 Outer Stopper Neck, Glass Stopper
250mL Volumetric Flask, Class A, #16 Outer Stopper Neck, Glass 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 solid glass pennyhead stopper. For additional stoppers, see CG-3018.
Chemglass Life Sciences 50mL Volumetric Flask, Class A, #9 Outer Stopper Neck, Glass Stopper
50mL Volumetric Flask, Class A, #9 Outer Stopper Neck, Glass 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 solid glass pennyhead stopper. For additional stoppers, see CG-3018.
Chemglass Life Sciences 5mL Volumetric Flask, Class A, #9 Outer Stopper Neck, PE Stopper
5mL Volumetric Flask, Class A, #9 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 5mL Volumetric Flask, Class A, #9 Outer Stopper Neck, Glass Stopper
5mL Volumetric Flask, Class inAin, #9 Outer Stopper Neck, Glass 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 solid glass pennyhead stopper. For additional stoppers, see CG-3018.
Chemglass Life Sciences 10mL Volumetric Flask, Class A, #9 Outer Stopper Neck, Glass Stopper
10mL Volumetric Flask, Class A, #9 Outer Stopper Neck, Glass 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 solid glass pennyhead stopper. For additional stoppers, see CG-3018.
Chemglass Life Sciences 1000mL Volumetric Flask, Class A, #22 Outer Stopper Neck, Mixing Bulb
1000mL Volumetric Flask, Class A, #22 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, PE Stopper
50mL Volumetric Flask, Class A, #9 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 10mL Volumetric Flask, Class A, #9 Outer Stopper Neck, PE Stopper
10mL Volumetric Flask, Class A, #9 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 20 +/- 0.08mL Capacity, #13 Stopper Size, Approx 128mm Height with Stopper
Volumetric Flask, 20 +/- 0.08mL Capacity, #13 Stopper Size, Approx 128mm Height with Stopper. Low actinic red stained glass provides protection to light sensitive solutions. Allowing less than 1% transmission below 400nm and 5% from 400-600nm. 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 glass stopper.