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
Ace Glass, Inc. Flask, storage, 250mL, bottom hose connection, #6 stopper size beaded neck, cs/6
250 mL media storage flask with 1/2" bottom hose connection. Ideal for use with aseptic filling bells for transferring medias to various other flasks and vessels. Beaded rim neck takes standard cotton plugs or stoppers.
Bellco Glass, Inc. Bell-Flo Flask,250mL-L32 No Ctr Cap
Manufactured from type 1 class a Borosilicate glass. Bottom indent and 3 vertical baffles for optimal mixing. MADE IN THE USA. Sidearm cap: 32mm Center cap: 70mm Flask size: 250ml
Ace Glass, Inc. Flask, reaction/storage, 200mL, no 15 O-ring joint, 0-3 inlet valve side arm, No-Air, Schlenk
Flask, reaction/storage, 200mL, no 15 O-ring joint, 0-3 inlet valve side arm, No-Air, Schlenk
Chemglass Life Sciences Flask Only, 15ml Sublimer
Flask Only, 15ml Sublimer. Replacement part for CG303601 sublimation apparatus.
Chemglass Life Sciences 5 +/- 0.08mL Capacity, #13 Stopper Size, Approx 96mm Height with Stopper
Volumetric Flask, 5 +/- 0.08mL Capacity, #13 Stopper Size, Approx 96mm 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 500mL Volumetric Flask, Class A, #19 Outer Stopper Neck, Glass Stopper
500mL Volumetric Flask, Class A, #19 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.
Bellco Glass, Inc. Borosil Volumetric Flask With Glass/Plastic Stopper, ASTM E288 Class A, 100 mL
Borosil Volumetric Flask with Interchangeable Solid Glass/ Plastic Stopper, Accuracy as per Class A, ASTM E288 with Batch Certificate, 100 mL, CS/10Borosil Volumetric Flasks with Interchangeable PP Stoppers are manufactured from 3.3 Borosilicate I.D. control tubing. Each flask is individually calibrated with an automatic, computer controlled, calibration machine, providing a more accurate volume. Borosils Volumetric Flasks are designed to give the best combination of thermal shock resistance, physical strength and resistance to chemical attack. All Volumetric Flasks have permanent amber printing. Comes with Batch Certificate. - 5mL to 20mL supplied with trapezoidal shape for better stability *Certified and Calibrated at 20 C. Material: 3.3 BorosilicateColor: ClearCapacity: 100mLTolerance: 0.08mLNeck Type: Solid Glass/ Plastic StopperNeck Specification: GroundedStopper Size: 14/23Class/ Quality Grade: Type I, Class AQuantity Per Case: 10
Vee Gee Volumetric Flask, Amber, Class A, Glass Stopper, 200 mL
The SIBATA Amber Class A Volumetric Flask is constructed of low-actinic amber glass, providing protection for materials that are sensitive to light. It features machine-blown body and heavy-beaded, heavy-tubing neck that is tooled for standard taper glass stoppers.• Constructed of borosilicate glass with a low coefficient of expansion• Designed """"To Contain"""" with a temperature of calibration at 20°C• Flask has a large marking square and includes a glass stopper• Meets ASTM E-288 Class A Specifications & USP Standards for Volumetric Flasks
Chemglass Life Sciences 100 +/- 0.10mL Capacity, #16 Stopper Size, Blue Stopper Handle Color, Approx 180mm Height with Stopper
Volumetric Flask, 100 +/- 0.10mL Capacity, #16 Stopper Size, Blue Stopper Handle Color, Approx 180mm 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 CG-3020-A PTFE 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 2000 +/- 0.50mL Capacity, #27 Stopper Size, Red Stopper Handle Color, Approx 380mm Height with Stopper
Volumetric Flask, 2000 +/- 0.50mL Capacity, #27 Stopper Size, Red Stopper Handle Color, Approx 380mm 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-3020-A PTFE 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 100 +/- 0.10mL Capacity, #16 Stopper Size, Blue Stopper Handle Color, Approx 180mm Height with Stopper
Volumetric Flask, 100 +/- 0.10mL Capacity, #16 Stopper Size, Blue Stopper Handle Color, Approx 180mm 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-3020-A PTFE 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 2000 +/- 0.50mL Capacity, #27 Stopper Size, Approx 380mm Height with Stopper
Volumetric Flask, 2000 +/- 0.50mL Capacity, #27 Stopper Size, Approx 380mm 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.
Foxx Life Sciences Borosil® Amber Light-Blocking Volumetric Flask Class A with Interchangeable Glass Pennyhead Stopper (29/32), Batch Certificate, 2L (2000mL), 2/CS
Borosil® Amber Light Blocking 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. Available from 5mL to 2L. Amber protects from 300nm to 500nm. 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 200 +/- 0.12mL Capacity, #19 Stopper Size, Green Stopper Handle Color, Approx 175mm Height with Stopper
Volumetric Flask, 200 +/- 0.12mL Capacity, #19 Stopper Size, Blue Stopper Handle Color, Approx 175mm 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 CG-3020-A PTFE 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.