Specialty Flasks
Specialty flasks are the backbone of many experimental setups, offering the durability and precision needed for demanding experiments.
Explore our diverse collection, including round bottom flasks, single neck flasks, bioreactor flasks, Ace Glass freeze-drying flasks, and 4 neck flat flange reaction vessel covers. All flasks are carefully designed to withstand the requirements of multiple research and analysis procedures.
In this category, you'll discover renowned brands such as Chemglass, Ace Glass, and Kemtech America, all known for their commitment to quality and innovation in lab glassware.
Whether you're searching for a Schlenk flask, a three-neck round bottom flask, a biomass flask, or a 3-neck flask for your lab, we offer a selection of flask options suitable for a range of experiements. Trust our specialty flasks to provide the precision and durability your research demands.
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Reaction Flask, Spherical
Ace GlassRugged spherical flask with neck opening of 4" (10.2cm). Standard size flasks use regular Glas-Col heating mantles of equivalent capacity. Length of straight section including flange, approximately 9.5cm (33/4 "). Uses 6496 Clamp for securing flask hea
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SYNTHWARE Heavy Wall Cylindrical Pressure Vessels
Kemtech AmericaPressure Vessel, Heavy Wall, Cylindrical, Synthware, Capacity: 15-120mL available, GL Thread Size: 15, Vessel has an internal thread for use with PTFE bushing, O-ring is positioned above the thread for inproved sealing.
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Round bottom, HEAVY WALL three neck flask with standard taper outer joints on the center neck and 20º angled side necks. For Larger Flasks See CG-1524.
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SYNTHWARE Schlenk Storage Tubes with High Vacuum Valves
Kemtech AmericaSYNTHWARE Schlenk storage tube with a high vacuum valve. The valve has a PTFE O-ring at the tip and a PTFE wiper to protect the O-rings on the shaft. Valve is used to control liquid or gas flow into the vessel.
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Hydrogenation/Gas Apparatus I
Ace GlassParr Model 3911 Hydrogenation unit for working volumes of 1ml to 200ml . Ace-thred vessels replace rubber stoppered vessels and eliminate cross-over contamination caused by leeching or sample retension. Complete unit includes all adapters needed for the supplied 8648 series bottles…
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Round bottom, HEAVY WALL two neck flask with standard taper outer joints on both the center neck and vertical side neck.
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Made of high quality, heavy duty, 3.3 borosilicate glass Includes interchangeable glass penny-head stopper Perfect for any science or home laboratory Iodine flask with ground joint and interchangeable stopper made of high quality, heavy duty 3.3 borosilicate glass. Used for iodine value…
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Cylindrical Reaction Kettles
SP Wilmad-LabGlassCylindrically shaped, the upper end of these borosilicate glass reaction kettles are tooled to obtain a thickened portion and flat top.The finely ground tops create a leak-proof fit with covers LG-8030 to LG-8050, ML-1285 and ML-1286.
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3 Neck Reaction Vessel/Kettle Cover
SP Wilmad-LabGlassFeaturing a center neck and two side necks with full length outer Standard Taper joints that are 180° apart, these borosilicate glass reaction vessel lids have a conical flange. The bottom part of lid is finely ground for a leak-proof fit with flask. LG-8030 is used on cylindrical or…
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SYNTHWARE Round Bottom Reaction Flasks with Glass Stopcock
Kemtech AmericaSYNTHWARE round bottom single neck reaction flask with a standard taper outer joint and a 2mm bore glass stopcock sidearm. Useful for sample storage and simple reactions. The stopcock has a constant pressure retention device.
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Round bottom, HEAVY WALL, four neck flask with standard taper outer joints on the center and vertical side necks.
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Reaction Assembly, Portable, 12 and 22L
Ace GlassComplete self-supporting pilot plant assembly. Needs only to be located near coolant and electrical outlet. When not in use, entire assembly can be intact, without breakdown. Features flask, self-standing mechanical or air motor, flat-sided powder funn
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Heavy Wall 1L Round Bottom Receiving Flasks
Across InternationalAi 35/20 standard taper joint, heavy wall 1000mL round bottom receiving flask.
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Round bottom pressure flask, with either #15 or #25 PTFE plug seal top opening. This style also has a side thermowell port to facilitate a thermometer or a temperature probe to measure flask temperature without losing the pressure integrity of the vess
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Rugged spherical reaction flask with Duran style flat flange with O-Ring groove, for use with 6517 Quick Release Clamp. Various valve and bottom fitting configurations available, see individual listings. each flask includes a CAPFE (PTFE encapsulated silicone) O-Ring. Plain silicon O-Rings are also…
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Benchtop Reactor, All-in-one, Jacketed
Ace Glass1L or 2L jacketed general purpose bench top reactor system supplied complete with everything necessary for operation. The system is designed so that all wetted surfaces are glass and PTFE for maximum chemical compatibility. A small overall stand footprint and flexible drive shaft combination allow…
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Reaction Flask Head, #7 Ace-Thred
Ace GlassHeads with four necks, three inline standard taper joints and one perpendicular #7 Ace-Thred™ thermometer joint. Included 5029 nylon bushing & FETFE o-ring permits vertical adjustment of 6-7mm OD thermometers. Use with our 6504,6511 & 6516 reaction vessels that feature either a 137 x 100mm ID…
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Borosilicate glass, round bottom reaction vessel. Supplied with 24/40 center neck and two 24/40 side necks. Fourth neck is #25 Ace-Thred on 500 mL for use with 7506-10 Bushing and O-Ring; #36 Ace-Thred on 1000 mL and 2000 mL sizes for use with 7506-12 Bushing and O-Ring to make a leak-tight…
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Round bottom, HEAVY WALL, three-neck flask with standard taper outer joints on the center and side necks. Entire body of the flask is jacketed and has two hose connections for circulation of heating or cooling liquid.
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Pear Shaped Glass Recovery Flasks
United Scientific SuppliesHeavy wall recovery flasks are ideal for use with rotary evaporators. Flasks feature a square bead and a single neck with ground glass 24/40 joint. Opening at top is designed for easy recovery of reaction products using a spatula. Flask bottom fits standard heating mantles.
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SYNTHWARE Modified Schlenk Flasks with Teflon® Stopcocks
Kemtech AmericaSYNTHWARE modified Schlenk flask with a standard taper outer joint and a 2mm bore PTFE stopcock in side arm. The Kjeldahl shape permits easy transfer of liquids and solids. The lower portion of the flasks fits standard heating mantles to facilitate heating and stirring.
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Cylindrical Jacketed/Indented Reaction Vessels, O-Ring Flange
SP Wilmad-LabGlassThese borosilicate glass reaction vessels are jacketed with 1/2" hose connectors. They have four indentations for improved stirring and a tooled flat flange with an O-ring groove for a greaseless seal.
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SYNTHWARE Storage Flasks with Outer Joints
Kemtech AmericaSYNTHWARE storage flask with standard taper outer joint and high vacuum valve. Valve has a PTFE o-ring at the tip. Valve is used to control liquid or gas flow into the flask.
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Round bottom,single neck,all PTFE boiling flask. Maximum temperature 260 degrees C.
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Disposable Side-arm Assembly
CorningCorning Spinner Flask Aseptic Transfer Caps will enhance the productivity of your cell culture operations when adding or removing medium and cells. Aseptic Transfer Caps are sterile (10?6 SAL), individually double bagged and fit the side arms on 3L Corning Disposable Spinner Flasks (Cat. No. 3563).…
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Rugged cylindrical reaction flask with Duran, flat, ground flange with O-Ring groove, for use with 6517 Quick Release Clamp but with indents for greater agitation. Each flask is supplied with one CAPFE O-Ring (PTFE encapsulated silicone O-Ring). Plain silicone O-Rings are also available. For…
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Round bottom 2-neck flask having standard taper outer joints, both being of the same size. Available with a choice of a 2mm high vacuum glass stopcock having a S.S. constant pressure retaining device or a 0-4mm Chem-Cap® Airfree® inlet valve. Side neck can be fitted with a CG-3022 septum…
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Round bottom, HEAVY WALL, three-neck flask with standard taper outer joints on the center neck and vertical side necks. Lower half of the flask is jacketed with two hose connections for circulation of heating or cooling liquid.
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4 Neck Reaction Vessel Covers
SP Wilmad-LabGlassFeaturing a center neck and three side necks with full length outer Standard Taper joints that are 120° apart, these borosilicate glass reaction vessel lids have a conical flange. Bottom flange ID is 4" and ground for a leak-proof fit with a reaction flask. For use with reaction vessels…
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European style flask with tapered walls and a shallow hemispherical bottom for more efficient mechanical or magnetic stirring. Entire body of the flask is jacketed and has two hose connections for circulation of heating or cooling liquid. With standard taper outer joints on center and side necks.
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Round bottom, HEAVY WALL two neck flask with standard taper outer joints on both the center neck and angled side neck. Flasks with 10/30 side neck are for use with CG-3506 thermometers. The 29/26 center neck flasks have a groove tooled just below the grind to aid in clamping of the flask.
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Iodine Flasks
DWK Life Sciences (Kimble)Iodine flask with size 22 stopper Size 22 PTFE standard taper stopper is included A durable matte-finish ceramic enamel marking spot takes writing and erases easily Designed from ASTM Specification E1404, Type II, Class 3 requirements