Flasks
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™ 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™ Erlenmeyer Flask, Narrow Neck
High quality borosilicate 3.3 glass Erlenmeyer Flask with narrow neck design.
Eisco™ Glass Erlenmeyer Flasks, Narrow Neck
Graduated conical flasks made from high-quality borosilicate 3.3 glass.
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 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.
PYREX™ Class A Volumetric Flask with Glass Standard Taper Stopper
Improved lab convenience, broad selection and precise volume measurement as well as being manufactured to Class A tolerances
Eisco™ Round-Bottom Flask
With glass tubing and rubber stopper.
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™ Polypropylene Filtering Flasks
Buchner filtering flask made of high quality, chemical resistant polypropylene with a conical shape to prevent spills
Eisco™ Polypropylene Volumetric Flask with Screw Cap
Flasks are constructed of high quality, durable polypropylene and fitted with a screw cap.
Eisco™ Class A Volumetric Flasks - ASTM
Class A Volumetric Flasks are manufactured according to ASTM standards, and include interchangeable polypropylene stoppers.
Eisco™ Class A Volumetric Flasks with Individual Work Certificates, USP
Class A Volumetric Flasks are USP-certified, and include interchangeable polypropylene stoppers and individual work certificates.
Eisco™ Volumetric Flask - Class 'B', Blue Graduation, Socket Size 12/21
Borosilicate glass with one graduation mark.
Eisco™ Round Bottom 3 Parallel Necks Distilling Flask
High quality borosilicate 3.3 glass round bottom distilling flask with three parallel necks
Eisco™ Round Bottom Boiling Flasks with Interchangeable Joint
High quality borosilicate 3.3 glass round bottom boiling flasks with interchangeable joints feature ground joints and necks with standard socket sizes
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.
Eisco™ Glass Buchner Filtering Flasks
High Quality borosilicate 3.3 glass Buchner filtering flasks available in a variety of socket sizes
Eisco™ Erlenmeyer Flasks - Wide Neck
High quality borosilicate 3.3 glass Erlenmeyer flasks with wide neck design.
Eisco™ Narrow Neck Glass Erlenmeyer Flasks
Eisco™ Narrow Neck Glass Erlenmeyer Flasks feature interchangeable joints and have superior chemical resistance.
Eisco™ Class B Glass Volumetric Flask with Glass Stopper
Class B Glass Volumetric Flask with Glass Stopper features a single graduation and blue markings.
Eisco™ Class B Glass Volumetric Flasks with Snap Cap
Eisco™ Class B Glass Volumetric Flasks with Snap Cap features a flat bottom design, single graduation, and blue print markings.
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.
Eisco™ Glass Round Bottom Flask
Glass round 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. 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™ Safety Pack Volumetric Flask Sets - Class A, ASTM
Multi-piece Safety Pack Volumetric Flasks feature single white graduation line and glass penny stoppers.
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™ Class B Glass Volumetric Flask with Snap Cap
Eisco™ Class B Glass Volumetric Flask with Snap Cap features a flat bottom design, single graduation, and white print markings.
