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 Flat Bottom Flask
Glass flat bottom 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.
United Scientific™ Borosilicate Glass Distilling Flask
Distilling Flasks ideal for distillation applications.
United Scientific™ Class B Volumetric Flask with Glass Stopper
Volumetric Flasks offering quality and value for the lab.
Eisco™ Class A Glass Volumetric Flasks with Polypropylene Stopper
Eisco™ Class A Glass Volumetric Flasks with Polypropylene Stopper features a single graduation mark and a fitted chemical resistant stopper.
Eisco™ Glass Round Bottom Boiling Flask, Wide Neck
Round bottom boiling flasks made from high quality borosilicate glass. Designed with a wide neck and beaded rim as per DIN12347 standard.
Eisco™ Polypropylene Volumetric Flask with Screw Cap
Flasks are constructed of high quality, durable polypropylene and fitted with a screw cap.
Supertek™ Class B Polypropylene Volumetric Flasks with Stoppers
Light in weight, these Class B PP Volumetric Flasks are an excellent break-resistant alternative to glass and come with the newly designed super-stoppers.
Supertek™ Class A, Reusable - Clear Glass Volumetric Flasks with Polypropylene Stoppers
Calibrated To Contain, these Clear Glass Volumetric Flasks with Polypropylene Stoppers are calibrated at 20°C. Printed in white color.
Supertek™ Clear Glass Erlenmeyer Graduated Flasks with Enameled Area for Marking
Uniform wall thickness distribution makes it ideal for heating liquids with these reusable Clear Glass Erlenmeyer Graduated Flasks. The conical form makes them suitable for mixing liquids!
Supertek™ Screw Cap Polypropylene Conical Flasks
These cone shaped Screw Cap PP Flasks are rigid, translucent and autoclavable. The screw cap keeps the contents of the flask contamination free and makes the flask leakproof.
Supertek™ Heavy Wall Bolt Neck Filtration Graduated Flasks with Tubulation
These reusable Filtration Flasks have sidearm tubulations and white gradations to show approximate capacity. Heavy wall for Superior Strength.
Supertek™ Class A, Reusable - Clear Glass Volumetric Flasks with Snap Caps
Calibrated To Contain, these Clear Glass Volumetric Flasks with Snap Caps are calibrated at 20°C. Printed in white color.
Supertek™ Round Bottom Clear Glass Flasks with Enameled Area for Marking
Uniform wall thickness distribution makes it ideal for heating liquids with these reusable Round Bottom Glass Flasks. Strong sturdy rim.
Dynalon™ Erlenmeyer Flasks with Blue Screw Closures
Highly transparent, wide mouth erlenmeyer flasks with blue polypropylene screw closures and printed blue graduations.
Bel-Art™ Filtering Flask, Side Arm
Side-arm with downward angle to prevent tipping.