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
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™ Glass Round Bottom Distilling Flasks with Oblique Neck
Round bottom distilling flasks made from high quality borosilicate glass. Designed with 1 oblique jointed neck as per DIN12383 standard. Autoclavable.
Eisco™ Glass Kjedahl Flasks, Plain Neck
Kjedahl flasks made from high quality borosilicate glass. Designed with a round bottom and plain long neck. Used for nitrogen determination as per the Kjedahl mthod. Conforms to DIN ISO 12360 standard
Eisco™ Glass Volumetric Flasks with Snap Cap, Class A
Volumetric flask made from high quality borosilicate glass. Designed with a flat bottom and single graduation mark. Fit with a blue plastic snap cap. Class A. Conforms to ASTM-E288 standard.
Eisco™ Glass Three Neck Distillation Flasks
Eisco™ Glass Three Neck Distillation Flasks with screw threads at the neck, which allows the flasks to connect firmly with other glassware.
Eisco™ Glass Erlenmeyer Flask
Glass Erlenmeyer flask with screw thread neck in standard socket size. Made with high quality borosilicate 3.3 glass, extremely durable, with a low temperature gradient and superior chemical resistance. Flask connects firmly to other glassware with the help of threaded joints.
Eisco™ Glass Two-Neck Distillation Flask
Glass two-neck distillation flask features one oblique neck, screw threading in both necks, and standard socket size. Made with high quality borosilicate 3.3 glass, durable with low temperature gradient. Flask connects firmly to other glassware with the help of screw thread joints.
Eisco™ Pear Shape Distilling Flasks
High quality borosilicate 3.3 glass pear shape distilling flasks feature short neck design with interchangeable joints.
Eisco™ Flat Bottom Boiling Flasks with Interchangeable Joint
High quality borosilicate 3.3 glass flat bottom boiling flasks feature short necks and interchangeable joints.
Eisco™ Round Bottom Distilling Flask with 3 Oblique Necks
High quality borosilicate 3.3 glass available in a variety of center and side socket sizes.
DWK Life Sciences Kimble™ ValueWare™ Narrow-Mouth Erlenmeyer Flasks
Economical and versatile; ideal for general laboratory usage.
DWK Life Sciences Kimble™ ValueWare™ Heavy-Wall Filtering Flasks
Made with a heavier wall than a standard Erlenmeyer flask.
DWK Life Sciences Kimble™ ValueWare™ Flat-Bottom Florence Boiling Flasks
Low coefficient of expansion to resist thermal shock.
DWK Life Sciences Kimble™ ValueWare™ Volumetric Flasks, Class A
Calibrated To Contain.
DWK Life Sciences Kimble™ ValueWare™ Volumetric Flasks, Class A, with Snap Cap
Calibrated To Contain.