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 10 +/- 0.08mL Capacity, #13 Stopper Size, Approx 101mm Height with Stopper
Volumetric Flask, 10 +/- 0.08mL Capacity, #13 Stopper Size, Approx 101mm 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.
Chemglass Life Sciences 1000mL Volumetric Flask, Class A, #22 Outer Stopper Neck, Glass Stopper
1000mL Volumetric Flask, Class A, #22 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 2000mL Volumetric Flask, Class A, #27 Outer Stopper Neck, Mixing Bulb
2000mL Volumetric Flask, Class A, #27 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 250 +/- 0.20mL Capacity, #19 Stopper Size, Approx 250mm Height with Stopper
Volumetric Flask, 250 +/- 0.20mL Capacity, #19 Stopper Size, Approx 250mm 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-3018 glass 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.
Bellco Glass, Inc. Amber stained volumetric flasks are manufactured per astm e-288 class a serialized glassware specifications. Calibrated to contain (tc), these flasks feature white enamel printing and diamond etched graduation line. For light sensitive materials. Size
Amber stained volumetric flasks are manufactured per astm e-288 class a serialized glassware specifications. Calibrated to contain (tc), these flasks feature white enamel printing and diamond etched graduation line. For light sensitive materials. Size
Bellco Glass, Inc. Amber stained volumetric flasks are manufactured per astm e-288 class a serialized glassware specifications. Calibrated to contain (tc), these flasks feature white enamel printing and diamond etched graduation line. For light sensitive materials. Size
Amber stained volumetric flasks are manufactured per astm e-288 class a serialized glassware specifications. Calibrated to contain (tc), these flasks feature white enamel printing and diamond etched graduation line. For light sensitive materials. Size
Bellco Glass, Inc. Individually calibrated to deliver at 20C. Durable ring marks resilient wear. Supplied with standard ground polypropylene stopper. Certified Class B tolerance per DIN ISO 1042 Volume: 1l Accuracy +/- ml: 0.60 Height: 310mm Stopper size: 2
Individually calibrated to deliver at 20C. Durable ring marks resilient wear. Supplied with standard ground polypropylene stopper. Certified Class B tolerance per DIN ISO 1042 Volume: 1l Accuracy +/- ml: 0.60 Height: 310mm Stopper size: 2
Bellco Glass, Inc. Manufactured from type 1 class a Borosilicate glass. Bottom indent and 3 vertical baffles for optimal mixing. Sidearm cap: 32mm Center cap: 70mm Flask size: 100ml
Manufactured from type 1 class a Borosilicate glass. Bottom indent and 3 vertical baffles for optimal mixing. Sidearm cap: 32mm Center cap: 70mm Flask size: 100ml
Bellco Glass, Inc. Individually calibrated to deliver at 20C. Durable ring marks resilient wear. Certified Class B with individual ring marking per DIN 122664. Supplied with screw cap. Volume: 100ml Accuracy +/- ml: 0.16 Height: 180mm Thread: 18
Individually calibrated to deliver at 20C. Durable ring marks resilient wear. Certified Class B with individual ring marking per DIN 122664. Supplied with screw cap. Volume: 100ml Accuracy +/- ml: 0.16 Height: 180mm Thread: 18
Bellco Glass, Inc. Individually calibrated to deliver at 20C. Durable ring marks resilient wear. Supplied with standard ground polypropylene stopper. Certified Class B tolerance per DIN ISO 1042 Volume:50ml Accuracy +/- ml: 0.10 Height: 150mm Stopper size:
Individually calibrated to deliver at 20C. Durable ring marks resilient wear. Supplied with standard ground polypropylene stopper. Certified Class B tolerance per DIN ISO 1042 Volume:50ml Accuracy +/- ml: 0.10 Height: 150mm Stopper size:
Chemglass Life Sciences 250 +/- 0.20mL Capacity, #19 Stopper Size, Approx 250mm Height with Stopper
Volumetric Flask, 250 +/- 0.20mL Capacity, #19 Stopper Size, Approx 250mm 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.