
Distilling Flasks
Distilling flasks are used to separate mixtures of two liquids with different boiling points. A variety of designs and capacities are available to accommodate distillation processes of varying complexities. Flask design typically features a distillation column in the form of a long neck, a side arm that facilitates condensation, and a round bottom for uniform heat distribution. For complex distillations, flasks with two or more necks that allow for connection to multiple components are available. Neck joints come in a variety of sizes, orientations, and joint types. Distilling flasks are manufactured from heat and chemical resistant materials, such as borosilicate glass or PFA.
Distilling flasks, also known as distillation flasks, are types of laboratory flasks forming part of larger distillation assemblies used for the separation and/or purification of liquids or liquid mixtures where the components have different boiling points. Distillation flasks are used to contain and heat the liquid(s) that require purification. They are round-bottomed for uniform heat distribution, with a stoppered or jointed neck of variable length, to which is attached a downward-sloping, inclined side-arm for connection to a condensing unit or similar component to cool the heated vapors back down to their liquid state. For complex distillations, flasks with two or more necks that allow for connection to multiple components are available.
Distilling flasks are usually made of a high-quality glass, such as borosilicate, for heat and chemical resistance and for reusability. Heating mantles are the preferred heat source for improved temperature control and for safety reasons, but direct flame heat sources are also used. Immersion thermometers can also be introduced into the neck of the flasks to monitor the temperature of the distillation process.
Distilling flasks are available in a range of capacities, and the neck joints come in a variety of sizes, orientations, and joint types.
What are distillation flasks used for?
- Separation and purification of miscible liquid mixtures in organic chemistry
- Drying off solid residues and/or solvent removal
- Distilling off liquids from polymers and petroleum products
- Removal of particulates or other solid contaminants
- As part of a water purification system for production of distilled water for laboratory use
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Corning™ PYREX™ Distilling Flasks with Three Angle Necks, Standard Taper Joint
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Provide maximum assembly and working space
Neck Style | Angled |
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Shape | Multi-neck |
Description | Top style: Standard taper joint |
Material | Borosilicate Glass |
No. per Pack | 1/Pk. |
DWK Life Sciences Kimble™ Kontes™ Two Neck Round Bottom Heavy Wall Distilling Flasks
Outer joints. Side neck is angled.
Includes | Standard taper outer joint |
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No. of Positions | 2 |
Neck Style | Angled |
Bottom Shape | Round |
Material | Borosilicate Glass |
Includes | Glass plug and the patented pressure/vacuum retainer |
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Shape | Kjeldahl |
Bottom Shape | Round |
Material | Borosilicate Glass |
For Use With (Application) | For heating, stirring and solvent stripping without impairing ease of liquid and solid transfer |
Corning™ PYREX™ Church Flask
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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For the distillation of bituminous materials suitable for road treatment
Includes | Standard taper outer joint |
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No. of Positions | 3 |
Neck Style | Vertical |
Bottom Shape | Round |
Material | Borosilicate Glass |
DWK Life Sciences Kimble™ Kontes™ Round Bottom Four Neck Heavy Wall Distilling Flasks
With vertical outer joints
Includes | Standard taper outer joint |
---|---|
No. of Positions | 4 |
Neck Style | Vertical |
Bottom Shape | Round |
Material | Borosilicate Glass |
Corning™ PYREX™ Distilling Flasks with Three Vertical Necks, Standard Taper Joint
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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With side and center neck standard taper joints
Neck Style | Vertical |
---|---|
Shape | Multi-neck |
Description | Top style: Standard taper joint |
Material | Borosilicate Glass |
No. per Pack | 1/Pk. |
DWK Life Sciences Kimble™ Kontes™ Three Neck Round Bottom Heavy Wall Distilling Flasks
With standard outer joints
Includes | Standard taper outer joint |
---|---|
No. of Positions | 3 |
Neck Style | Angled |
Bottom Shape | Round |
Material | Borosilicate Glass |
Corning™ PYREX™ Distilling Flasks
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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Round bottoms, vial mouths, with side arms at 75° angle
Neck Style | Long |
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Description | Top style: Beaded rim |
Bottom Shape | Round |
Material | Borosilicate Glass |
Closure Material | Rubber |
Corning™ PYREX™ Distilling Flasks with Three Vertical, Level Necks, Standard Taper Joint
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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Side necks at same level as center neck
Neck Style | Vertical |
---|---|
Shape | Multi-neck |
Description | Top style: Standard taper joint |
Standard Taper Joint | 24/40 Center, Two 24/40 side |
Material | Borosilicate Glass |
No. per Pack | 1/Pk. |
Synthware™ Schlenk Flasks, Modified, with Glass Stopcock
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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Kjeldahl shape to facilitate heating and stirring
Disposable | Reusable |
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Description | Schlenk Flask, Modified |
Mouth Style | Rimmed |
Graduated | No |
Bottom Shape | Round |
Class | A |
Material | Borosilicate Glass (3.3) |
Closure Type | Stopper |
Autoclavable | Autoclavable |
Sterility | Non-sterile |
Synthware™ Schlenk Flasks, Modified, with High Vacuum Valve
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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Kjeldahl shape to facilitate heating and stirring
Description | Schlenk Flask, Modified, with High Vacuum Valve |
---|---|
Mouth Style | Rimmed |
Bottom Shape | Round |
Class | A |
Closure Type | Stopper |
Autoclavable | Autoclavable |
Sterility | Non-sterile |
Synthware™ Schlenk Flasks, Modified, with PTFE Stopcock
Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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Offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”
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Kjeldahl shape to facilitate heating and stirring
Disposable | Reusable |
---|---|
Description | Schlenk Flask, Modified |
Mouth Style | Rimmed |
Graduated | No |
Bottom Shape | Round |
Class | A |
Material | Borosilicate Glass (3.3) |
Sterility | Non-sterile |
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.
Disposable | Reusable |
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Neck Style | Oblique |
Mouth Style | Joint |
Product Type | Distilling Flasks |
Color | Clear |
Graduated | No |
Bottom Shape | Round |
Material | Borosilicate Glass |
Autoclavable | Autoclavable |
For Use With (Application) | Heating / Holding Liquids |
Sterility | Non-sterile |