Flasks
Vessels used for containing liquids and performing mixing, heating, cooling, incubation, filtration, storage, distillation, volume measurement, and other common liquid handling processes.
The variety of laboratory flasks includes boiling flasks, cell culture flasks, distilling flasks, Erlenmeyer flasks, filtering flasks, freeze drying flasks, Kjeldahl flasks, recovery flasks, and volumetric flasks. Manufactured from a variety of materials, flasks are typically made of glass or plastic resins such as polystyrene, polypropylene, polycarbonate, polymethylpentene, or PTFE. Depending on their application, flasks can be sealed with various closures, including air-tight screw caps, vent caps, and stoppers made of ground glass, glass, plastic, or rubber.
Laboratory flasks are found in most chemical, biological, clinical, and industrial laboratories and in a variety of other workplace settings. They are available in a range of capacities ranging from 10 mL up to 10 L. Depending on the type, they may be supplied with a jointed ground glass top, a glass or plastic stopper, or a screw top.
What Styles of Laboratory Flask Are Available?
• Erlenmeyer flasks are conical and are used for a wide range of purposes; they are graduated and available in narrow-neck or wide-neck versions
• Büchner flasks are also conical, but with a side-arm to accept tubing for vacuum applications and extra-thick walls for increased strength when operating under reduced pressure
• Round-bottomed flasks, including retort and Kjeldahl flasks, are used in chemistry laboratories for reaction, digestion, or heating, and may have up to three necks for connecting to inlet/outlet tubing and other vessels
• Volumetric flasks are used to prepare standard solutions. They are supplied with precise, one-mark graduations and a stopper, and are designated as Class A or Class B depending on their accuracy. Standard measuring flasks are also offered for less critical measurements
• Cell culture flasks are often supplied with specialized cell-adherent treated surfaces and vented filters. They are normally sterile and may have baffled bases for improved aeration during agitation
United Scientific™ Boiling Flasks, Round Bottom, Ground Glass Joint, Borosilicate Glass
Round bottom boiling flasks with ground glass joints (24/40).
Eisco™ Polypropylene Filtering Flasks
Buchner filtering flask made of high quality, chemical resistant polypropylene with a conical shape to prevent spills
United Scientific™ Class A Volumetric Flask with Glass Stopper, Batch Certified
Volumetric Flasks offering quality and value for the lab.
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™ Erlenmeyer Flask, Narrow Neck
High quality borosilicate 3.3 glass Erlenmeyer Flask with narrow neck design.
United Scientific Supplies Class A Amber Volumetric Flasks Wide Mouth, Individually Certified, QR Coded
Amber Wide Mouth Volumetric Flasks are Class A Serialized and feature a QR Code for easy access to documentation.
Eisco™ Glass Iodine Flask with Glass Stopper
Eisco™ Glass Iodine Flask with Glass Stopper are made from high quality borosilicate 3.3 glass and are designed for iodine value determination.
Eisco™ Class B Glass Volumetric Flasks with White Graduations
Eisco™ Class B Glass Volumetric Flasks with White Graduations feature a flat bottom design, interchangeable solid glass stoppers, and single graduation.
Eisco™ Round Bottom Distillation Flasks with Side Arm
High quality borosilicate 3.3 glass round bottom distillation flasks with integral side arms
United Scientific™ Boiling Flasks, Flat Bottom, Ground Glass Joint, Borosilicate Glass
Flat bottom boiling flasks with ground glass joints (24/40).
United Scientific™ Borosilicate Glass Pear Shaped Recovery Flasks
Recovery Flasks ideal for use with rotary evaporators.
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.
United Scientific™ Class A Volumetric Flask with Glass Stopper, Individually Certified
Volumetric Flasks offering quality and value for the lab.
United Scientific™ Borosilicate Glass Wide Mouth Erlenmeyer Flask
Wide Mouth Erlenmeyer Flasks ideal for titrations and culture work.
United Scientific™ Flask, Round Bottom, 3 Neck, Angular, Center Socket 24/40
High quality choice for distillation