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. Volumetric flask, class A, 200mL, blue lettering, with individual certificate, includes 14/23 polyethylene stopper, sp/2
Volumetric flask, class A, 200mL, blue lettering, with individual certificate, includes 14/23 polyethylene stopper, sp/2
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 ml: 50ml Accuracy +/- ml: 0.10 Height: 150mm Thread gl: 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 ml: 50ml Accuracy +/- ml: 0.10 Height: 150mm Thread gl: 18
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 ml: 25 ml Accuracy +/- ml : 0.06 Height: 115mm Thread gl: 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 ml: 25 ml Accuracy +/- ml : 0.06 Height: 115mm Thread gl: 18
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: 250ml Accuracy +/- ml: 0.24 Height: 235mm Thread: 25
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: 250ml Accuracy +/- ml: 0.24 Height: 235mm Thread: 25
Chemglass Life Sciences Flask, Volumetric, 500mL, PMP, Class A, 19/26, Tolerance: +-0.25mL
Flask, Volumetric, 500mL, PMP, Class A, 19/26, Tolerance: ¿0.25mL. Polymethylpentene (PMP) volumetric flasks are manufactured to conform to Class ¿A¿ standards per DIN EN ISO 1042. The flasks are packed with a printed lot number and batch certificate. The polymethylpentene flask offers a unique combination of transparency, heat and chemical resistance. Flasks have a scored graduation line, with coloring added for visibility. Supplied complete with matching polypropylene standard taper joint stoppers. Flask can be autoclaved at 121¿C.
Chemglass Life Sciences 1mL Micro Volumetric Flask, Class A, Tolerance: +-0.01mL
1mL Micro Volumetric Flask, Class A, Tolerance: ¿0.01mL. Class ¿A¿ micro volumetric flask calibrated to contain. With 14/20 top outer joint and supplied complete with a CG-3000 14/20 hollow stopper. Flasks have hex base for stability and ¿V¿ shaped interior bottom for total sample retrieval.
Chemglass Life Sciences 3mL Micro Volumetric Flask, Class A, Tolerance: +-0.02mL
3mL Micro Volumetric Flask, Class A, Tolerance: ¿0.02mL. Class ¿A¿ micro volumetric flask calibrated to contain. With 14/20 top outer joint and supplied complete with a CG-3000 14/20 hollow stopper. Flasks have hex base for stability and ¿V¿ shaped interior bottom for total sample retrieval.
Chemglass Life Sciences 2mL Micro Volumetric Flask, Class A, Tolerance: +-0.015mL
2mL Micro Volumetric Flask, Class A, Tolerance: ¿0.015mL. 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 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 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.
Hach Company 500mL 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
Chemglass Life Sciences Flask, Volumetric, 50mL, PP, Class B, GL-18, Tolerance: +-0.12mL
Flask, Volumetric, 50mL, PP, Class B, GL-18, Tolerance: ¿0.12mL. Polypropylene(PP) volumetric flasks are manufactured to conform to Class ¿B¿ standards per DIN EN ISO 1042. The transparent polypropylene flasks are an excellent break-resistant alternative to glass. Flasks have a scored graduation line, with coloring added for visibility. Supplied complete with matching polypropylene screw cap.
Cole-Parmer elements Volumetric Flask, Glass, with Glass Stopper, 100 mL; 2/PK
These Cole-Parmer elements™ volumetric flasks are constructed of quality borosilicate 3.3 glass. These flasks are calibrated "To Contain" (IN) by DIN standard at 20°C. Flasks can withstand a wide temperature range from –50 to 550°C.
Chemglass Life Sciences Flask, Volumetric, 10mL, PMP, Class A, 10/19, Tolerance: +-0.04mL
Flask, Volumetric, 10mL, PMP, Class A, 10/19, Tolerance: ¿0.04mL. Polymethylpentene (PMP) volumetric flasks are manufactured to conform to Class ¿A¿ standards per DIN EN ISO 1042. The flasks are packed with a printed lot number and batch certificate. The polymethylpentene flask offers a unique combination of transparency, heat and chemical resistance. Flasks have a scored graduation line, with coloring added for visibility. Supplied complete with matching polypropylene standard taper joint stoppers. Flask can be autoclaved at 121¿C.
Chemglass Life Sciences Flask, Volumetric, 50mL, PMP, Class A, 12/21, Tolerance: +-0.06mL
Flask, Volumetric, 50mL, PMP, Class A, 12/21, Tolerance: ¿0.06mL. Polymethylpentene (PMP) volumetric flasks are manufactured to conform to Class ¿A¿ standards per DIN EN ISO 1042. The flasks are packed with a printed lot number and batch certificate. The polymethylpentene flask offers a unique combination of transparency, heat and chemical resistance. Flasks have a scored graduation line, with coloring added for visibility. Supplied complete with matching polypropylene standard taper joint stoppers. Flask can be autoclaved at 121¿C.