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
DWK Life Sciences Kimble™ ValueWare™ Flat-Bottom Boiling Flasks
Made from Kimax™ Type KG-33 glass.
United Scientific™ Glass Erlenmeyer Flasks, Set of 3
Ideal starter set for the classroom or the laboratory.
Eisco™ Safety Pack Premium Glassware Set
Safety Pack Premium Glassware Set includes 3 low form beakers, 3 Class-A graduated cylinders, and 3 Erlenmeyer flasks.
Eisco™ Polypropylene Conical Flasks with Screw Caps
Eisco™ Polypropylene Conical Flasks with Screw Caps feature a rigid, durable, and translucent body.
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.
Eisco™ Glass Kjedahl Flasks with Socket
Kjedahl flasks made from high quality borosilicate glass. Designed with a round bottom, long neck, and socket. Used for nitrogen determination as per the Kjedahl mthod. Conforms to DIN ISO 12360 standard
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™ 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 Evaporating Flasks
Eisco™ Glass Evaporating Flasks are constructed of high quality borosilicate glass for durability.
Eisco™ Polypropylene Conical Flask, 250 mL
Break-resistant polypropylene conical flasks are great, economical alternative for similar glass flasks.
Eisco™ Glass Buchner Filtering Flasks
High Quality borosilicate 3.3 glass Buchner filtering flasks available in a variety of socket sizes
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.
Bel-Art™ Filtering Flask, Side Arm
Side-arm with downward angle to prevent tipping.
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.