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™ Borosilicate Glass Flat Bottom Boiling Flask
Boiling Flask featuring a high level of shock resistance.
Eisco™ Glass Pear Shaped Boiling Flasks, Short Neck
Pear shaped boiling flasks made from high quality borosilicate glass. Designed with a short neck and interchangable joint as per DIN12383 standard.
Eisco™ Class A Glass Volumetric Flask with Stopper
Class A Glass Volumetric Flask with Stopper - Features a flat bottom design, single graduation, and blue print markings.
Eisco™ Conical Filtering Flask with Integral Side Arm
The borosilicate glass conical filtering flask with integral side arm is ideal for storage, mixing, and transferring of various solutions. The flask is easy to use in any lab with its flat bottom, side arm, narrow neck, and beaded rim.
Eisco™ Class A Amber Glass Volumetric Flasks with Polypropylene Stoppers
Eisco™ Class A Amber Glass Volumetric Flasks with Polypropylene Stoppers protect light sensitive chemicals and feature a single graduation mark.
Eisco™ Glass Erlenmeyer Flasks, Narrow Neck
Graduated conical flasks made from high-quality borosilicate 3.3 glass.
Eisco™ Erlenmeyer Flasks - Wide Neck
High quality borosilicate 3.3 glass Erlenmeyer flasks with wide neck design.
CleanWear™ Tyvek™ Round Covers
Durable, form-fitting cover for small bowls, flasks or other consumables.
United Scientific™ Unistore™ Sterile Erlenmeyer Flask Vented, PC
Flask ideal for mixing, containing, and storing solutions.
United Scientific™ Borosilicate Glass Narrow Mouth Erlenmeyer Flasks
Borosilicate glass narrow mouth Erlenmeyer flasks are designed to give the best combination of thermal shock resistance and physical strength.
Eisco™ Glass Erlenmeyer Flasks with PTFE Lined Screw Cap
Erlenmeyer flasks made from high quality borosilicate glass. Includes an acid resistant polypropylene screw cap that is lined with PTFE. Both flask and cap are autoclavable.
United Scientific Supplies Vacuum Filtering Flask, 125 mL
For use with Microanalysis Vacuum Filter Holder Set, 25 mm (FHMA25-S)
United Scientific Supplies Vacuum Filtering Flasks
For use with 47 mm Vacuum Filtration Sets (FHFT47, FHPT47, and FHSS47)