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
DWK Life Sciences KIMBLE™ Kontes™ Wide Mouth Heavy Wall Class A Volumetric Flasks
Heavy wall design increases flask durability.
DWK Life Sciences KIMBLE™ KIMAX™ Class A Mixing Bulb-Style Volumetric Flask with Standard Taper Stopper
Mixing bulb in neck contains approximately 0.1 of capacity of body to aid in dissolving or mixing contents
DWK Life Sciences KIMBLE™ KIMAX™ Flasks with Color-Coded PTFE Stoppers
Calibrated To Contain
Corning™ PYREX™ Low-Actinic Class A Volumetric Flasks with Glass Standard Taper Stopper
Provide protection for materials sensitive to light
DWK Life Sciences KIMBLE™ KIMAX™ Brand Colorware Volumetric Class A Flasks
Single graduation ring blasted on the neck and durable matte finish marking area for use with an ordinary pencil
Corning™ PYREX™ Serialized and Certified Class A Low Actinic Volumetric Flask with Glass Standard Taper Stopper
Featuring red low actinic stained glass to provide protection for materials sensitive to light. Corning™ PYREX™ Serialized and Certified Flasks, Low Actinic are tested and calibrated in an ISO/IEC 17025 certified laboratory.
DWK Life Sciences KIMBLE™ KIMAX™ Brand Class A Volumetric Flasks
Calibrated To Contain and To Deliver
BRANDTECH™ VITLAB™ Class B PMP Volumetric Flasks with NS Stoppers
An excellent alternative to glass flasks, these Class B PMP Volumetric Flasks with NS Stoppers are designed to tight tolerances in the laboratory.
Eisco™ Class B Glass Volumetric Flasks with Snap Cap
Eisco™ Class B Glass Volumetric Flasks with Snap Cap features a flat bottom design, single graduation, and blue print markings.
Eisco™ Polypropylene Volumetric Flask with Screw Cap
Flasks are constructed of high quality, durable polypropylene and fitted with a screw cap.
Eisco™ Class A Glass Volumetric Flasks with White Graduations
Eisco™ Class A Glass Volumetric Flasks with White Graduations feature a flat bottom design, interchangeable solid glass stoppers, and single graduation.
Eisco™ Class A ASTM Glass Volumetric Flask with Polypropylene Stopper
Made of high quality Borosilicate 3.3 glass in compliance with ASTM-E288 standards. With chemically resistant polypropylene stopper.
Eisco™ Safety Pack Premium Glassware Set
Safety Pack Premium Glassware Set includes 3 low form beakers, 3 Class-A graduated cylinders, and 3 Erlenmeyer flasks.
Eisco™ Glass Volumetric Flasks with Polypropylene Stopper, Class A
Glass volumetric flasks with polypropylene stopper. Made from high quality borosilicate glass, polypropylene stoppers are acid resistant. Flasks are class A certified and individually calibrated in an ISO 17025 compliant calibration laboratory. Both flask and stopper can be autoclaved.