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, Flat Bottom, Ground Glass Joint, Borosilicate Glass
Flat bottom boiling flasks with ground glass joints (24/40).
United Scientific™ Class A Volumetric Flask with Snap Cap, Batch Certified (QR-Code)
Volumetric Flasks featuring a QR Code that makes tracking down certificates easier and simplifies the lab audit process.
Eisco™ Flat Bottom Boiling Flask with Narrow Neck
The Flat Bottom Boiling Flask with Narrow Neck is ideal for dealing with liquids at different temperatures due to its thick-walled design.
United Scientific™ Class A Volumetric Flask with Glass Stopper, Individually Certified (QR-Code)
Volumetric Flasks featuring a QR Code that makes tracking down certificates easier and simplifies the lab audit process.
Eisco™ Flat Bottom Boiling Flasks, Wide Neck
Flat bottom boiling flasks made from high quality borosilicate glass. The flasks are ideal for dealing with liquids at different temperatures due to their thick-walled design. Flasks have a wide neck and beaded rim as per DIN ISO 24450 standard
Eisco™ Pear Shape Distilling Flasks
High quality borosilicate 3.3 glass pear shape distilling flasks feature short neck design with interchangeable joints.
Eisco™ Polypropylene Conical Flask with Screw Top
Break-resistant polypropylene conical flasks with a screw top are great, economical alternative for similar glass flasks.
Eisco™ Class A Glass Volumetric Flasks with Snap Cap
Eisco™ Class A Glass Volumetric Flasks with Snap Cap features a flat bottom design, single graduation, and white print markings.
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™ Class B Volumetric Flask
Eisco™ Class B Volumetric Flask without stopper is constructed of high quality Borosilicate 3.3 Glass and features a single graduation mark.
DWK Life Sciences Kimble™ ValueWare™ Flat-Bottom Florence Boiling Flasks
Low coefficient of expansion to resist thermal shock.
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™ 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™ Round-Bottom Flask
Round-Bottom Flask with glass tubing and rubber stopper.