Boiling Flasks
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Round bottom, HEAVY WALL single short neck flask for use on rotary evaporators for receiving distillate. Joint at the top of the flask is a 35/25 socket. Plastic Coated to prevent injury from broken glass while preventing spillage of hazardous materials.
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Florence Boiling Flasks
EiscoMade of high quality, heavy duty Borosilicate glass Narrow neck, flat bottom, beaded rim. Perfect for any science or home laboratory Florence boiling flask made out of high quality, heavy duty borosilicate glass. Narrow neck, beaded rim and flat bottom. No stopper included. …
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Round bottom, HEAVY WALL single short neck flask with a standard taper outer joint. Flask has two hooks 180°; apart for use with CG-110 stainless steel springs.
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SYNTHWARE Round Bottom Flasks with Threaded Side Inlets
Kemtech AmericaSYNTHWARE round bottom, heavy wall, flask with standard taper outer joint and threaded side port. All sizes are hand blown from tubing to ensure uniform wall thickness. Side port is for insertion of thermometer or bleed tube having an O.D. between 5mm and 7.5mm.
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ValueWare® Round Bottom Flasks, Short Neck, Full-Length
DWK Life Sciences (Kimble)Manufactured from KIMAX™ borosilicate glass, ValueWare has a low coefficient of expansion and a very high resistance to chemical attack. This means optimal performance in the lab at an affordable price. Long life expectancy, resistant to most chemicals. Ideal for general laboratory use.…
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Round bottom, HEAVY WALL single short neck flask with a spherical socket joint. Flasks having a 35/20 socket joint are used as replacements for the collection flask on rotary evaporators.
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Flask, Single Neck
Ace GlassRound bottom flask with short neck and outer joint. Available in standard and heavy wall. Heavy wall approximately 30% heavier than standard wall. Used by glassblowers in fabricating single or multi-necked flasks.
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Round bottom, HEAVY WALL single short neck flask with a standard taper outer joint. The 29/26 flasks have a groove tooled just below the grind to aid in clamping of the flask. Please note: There are separate listings for larger capacity round bottom flasks.
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ValueWare® Flat Bottom Flasks, Florence, Reinforced Beaded Top
DWK Life Sciences (Kimble)Manufactured from KIMAX™ borosilicate glass, ValueWare has a low coefficient of expansion and a very high resistance to chemical attack. This means optimal performance in the lab at an affordable price. Long life expectancy, resistant to most chemicals. Ideal for general laboratory use.…
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These PYREX(r) round bottom boiling flasks have full length outer Standard Taper joints, but with shorter necks. They are manufactured from No. 7740 borosilicate glass. Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and mechanical strength for…
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Flask, Round Bottom, Three Neck
Ace GlassRound bottom flasks, three vertical necks, standard taper outer joints, standard and heavy wall. Flasks feature a flare-out directly below the center joint to facilitate cleaning and removal of stir blades.
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Boiling Flasks
GSC International, Inc.These quality round bottom boiling flasks are made from heat-resistant borosilicate glass, and have 24/40 ground glass joints and thick walls. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer,…
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Round bottom flasks, three vertical necks, spherical outer joints. Available in standard and heavy wall.
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Round bottom, HEAVY WALL single short neck flask with a standard taper outer joint. The 29/26 flasks have a groove tooled just below the grind to aid in clamping of the flask. Please note: There are separate listings for different capacity single neck round bottom flasks.
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Borosilicate Glass Round Bottom Boiling Flasks with Ground Glass Joints
United Scientific SuppliesBoiling, round bottom flasks with ground glass joints. Our boiling flasks are made from low-expansion borosilicate glass. Feature uniform wall thickness for superior mechanical strength and shock resistance. Ideal for boiling, heating and mixing in the laboratory.
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Flask, Two Necks, Vertical
Ace GlassTwo neck, one center and on vertical side neck, round bottom flask with standard taper joints. Available in standard wall or heavy wall.
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SYNTHWARE Round Bottom Two Neck Flasks
Kemtech AmericaSYNTHWARE round bottom, heavy wall, two neck flasks with standard taper outer joints on both the center neck and the angled side neck. All sizes are hand blown from tubing to ensure uniform wall thickness.
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Heavy wall, wide mouth flask with a GL80 glass thread and a 24/40 connecting adapter. Flasks have a heavy wall for vacuum applications and are balanced to prevent run-out during rotation. Unique design makes it easier to handle highly viscous liquids, powders, and solids. The large opening permits…
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Single Standard Taper Neck Heavy Wall Round Bottom Flasks
DWK Life Sciences (Kimble)Single neck flask with a Standard Taper outer joint Heavy wall Ref: ASTM Method D95 Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
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Flask, Round Bottom, Ace-Thred Side Port
Ace GlassRound bottom, single neck flask with Ace-Thred side port supplied with our 5029-10 nylon bushing and 7855-704 FETFE o-ring. Bushing is ideal for use with thermometers or bleed tubes of up to 7mm OD. Available in standard and heavy wall versions.
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Flask, Round Bottom, Ace-Thred Side Port
Ace GlassRound bottom, single neck flask with Ace-Thred side port supplied with our 5029-10 nylon bushing and 7855-704 FETFE o-ring. Bushing is ideal for use with thermometers or bleed tubes of up to 7mm OD. Available in standard and heavy wall versions.
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Round bottom, HEAVY WALL single long neck flask with a standard taper outer joint.
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Flask, Round Bottom, Four Neck
Ace GlassRound bottom flask with four necks arranged 3 in-line and one at 90 degrees. 500ml and smaller flasks have angled side necks while larger sizes feature vertical necks. Available in heavy wall.
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Borosil® Round Bottom Boiling Flasks have uniform wall thickness for even heat distribution. Constructed from stress-free borosilicate. Borosil® Boiling Flasks are heat-resistant. Built to withstand the demands of the modern lab, each flask has a flame-polished, beaded rim for added…
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PYREX VISTA flat bottom boiling flasks have full length outer 24/40 Standard Taper joints, but with shorter necks. Wall thicknesses are controlled to provide balance between thermal expansion and mechanical strength for greater shock resistance. The flat bottom boiling flasks are designed to ASTM E-1403.
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SYNTHWARE Round Bottom Vertical Three Neck Flasks
Kemtech AmericaSYNTHWARE round bottom, heavy wall, three neck flasks with standard taper outer joints on both the center neck and the vertical side necks. All sizes are hand blown from tubing to ensure uniform wall thickness.
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SYNTHWARE Round Bottom Flasks with Spherical Socket Joints
Kemtech AmericaSYNTHWARE round bottom boiling flasks with spherical socket joint. All sizes are heavy wall design and are hand blown from borosilicate tubing to ensure uniform wall thickness. These flasks can be used as replacements for the collection flask on rotary evaporators.
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PYREX Boiling Flasks
CorningCarefully designed and manufactured from borosilicate glass Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and mechanical strength for greater shock resistance Excellent chemical durability provides contamination-free results and long life…
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Borosil® Flat Bottom (Florence) Boiling Flasks have uniform wall thickness for even heat distribution. Constructed from stress-free borosilicate, Borosil® Boiling Flasks are heat-resistant. Built to withstand the demands of the modern lab, each flask has a flame-polished, beaded rim for…
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Flask, Round Bottom, Four Neck
Ace GlassRound bottom flask with four necks arranged 3 in-line and one 10/30 joint at 90 degrees. The 500ml size has angled side necks while all other sizes feature vertical necks. Available in heavy wall.
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Heavy Wall 10L Round Bottom 3-Neck Flasks
Across InternationalAi 10L heavy wall, 3-neck round bottom flask with 24/40 and 34/45 standard taper joint. Comes with two vertical 34/45 side necks and one 24/40 center neck. Glass material: high borosilicate glass 3.3.
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Round bottom, HEAVY WALL flask with standard taper outer joint. Side tubulation accepts a CG-1040 rubber fitment for insertion of thermometers or bleed tubes. Supplied complete with one CG-1040 rubber fitting.