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
Bellco Glass, Inc. Amber Volumetric Flask,10mL To Contain
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. Specifications:Size: 10mlStopper Size: 9Dimensions: 26x96mmCase Quantity: 6
Ace Glass, Inc. 40/35 10L flat bottom volumetric flask with graduation mark. See 8255-20 for stopper.
10L flat bottom volumetric flask with 40/35 joint. Flask has graduation mark.
Chemglass Life Sciences 50 +/- 0.08mL Capacity, #13 Stopper Size, Approx 148mm Height with Stopper
Volumetric Flask, 50 +/- 0.08mL Capacity, #13 Stopper Size, Approx 148mm 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 100mL Apollo Flask, 14/20 Outer Joint
100mL Apollo Flask, 14/20 Outer Joint. HEAVY WALL single neck flask with a standard taper outer joint. Low profile design allows the flask to sit upright on the bench and also permits easy access of products with a spatula or policeman. The flask contour is excellent for controlled evaporation of foaming solvents during rotary evaporation.
Chemglass Life Sciences 5mL Micro Volumetric Flask, Class A, Tolerance: +-0.02mL
5mL Micro Volumetric Flask, Class A, Tolerance: ¿0.02mL. Class ¿A¿ micro volumetric flask calibrated to contain. Flask has a GPI 13-425 top thread and is supplied complete with an open top screw cap and PTFE faced silicone septa. Flasks have hex base for stability and ¿V¿ shaped interior bottom for total sample retrieval. See MW-102 for replacement caps and MW-104 for replacement septa.
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.
Chemglass Life Sciences 10mL Micro Volumetric Flask, Class A, Tolerance: +-0.02mL
10mL Micro Volumetric Flask, Class A, Tolerance: ¿0.02mL. Class ¿A¿ micro volumetric flask calibrated to contain. Flask has a GPI 13-425 top thread and is supplied complete with an open top screw cap and PTFE faced silicone septa. Flasks have hex base for stability and ¿V¿ shaped interior bottom for total sample retrieval. See MW-102 for replacement caps and MW-104 for replacement septa.
Chemglass Life Sciences 2000mL Volumetric Flask, Class A, #27 Outer Stopper Neck, Glass Stopper
2000mL Volumetric Flask, Class A, #27 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 10 +/- 0.08mL Capacity, #13 Stopper Size, Orange Stopper Handle Color, Approx 101mm Height with Stopper
Volumetric Flask, 10 +/- 0.08mL Capacity, #13 Stopper Size, Orange Stopper Handle Color, 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 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 200 +/- 0.12mL Capacity, #19 Stopper Size, Approx 175mm Height with Stopper
Volumetric Flask, 200 +/- 0.12mL Capacity, #19 Stopper Size, 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 glass stopper.
Chemglass Life Sciences 500mL Volumetric Flask, Class A, #19 Outer Stopper Neck, Mixing Bulb
500mL Volumetric Flask, Class A, #19 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 100 +/- 0.10mL Capacity, #16 Stopper Size, Approx 180mm Height with Stopper
Volumetric Flask, 100 +/- 0.10mL Capacity, #16 Stopper Size, 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 glass stopper.
Chemglass Life Sciences 20 +/- 0.08mL Capacity, #13 Stopper Size, Orange Stopper Handle Color, Approx 128mm Height with Stopper
Volumetric Flask, 20 +/- 0.08mL Capacity, #13 Stopper Size, Orange Stopper Handle Color, 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 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 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. 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.
Chemglass Life Sciences 500 +/- 0.20mL Capacity, #19 Stopper Size, Green Stopper Handle Color, Approx 275mm Height with Stopper
Volumetric Flask, 500 +/- 0.20mL Capacity, #19 Stopper Size, Green Stopper Handle Color, Approx 275mm 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.