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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Round bottom, HEAVY WALL, four-neck flask with standard taper outer joints and a # 7 Chem-Thread for insertion of thermometers or bleed tubes having an O.D. between 4 and 7mm.
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Flask, Tapered Wall
Ace GlassWalls tapered inward toward the bottom to allow continuous operation with smaller volumes. Flasks supplied with joint on center and two side necks. The four and five neck versions have one or two #7 Ace- Thred necks to accomodate thermometers and elect
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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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SYNTHWARE Kuderna-Danish Flasks
Kemtech AmericaTop joint is a 24/40 outer while the lower joint is a 19/22 inner.
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Round bottom single neck flask having a standard taper outer joint. 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.
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Round bottom, HEAVY WALL, four neck flask with standard taper outer joints on the center and 20º angled side necks.
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Round bottom flask with a 0-4mm Hi-Vac valve top with a 9mm side port designed to accept 3/8in Cajon fittings. The valved top gives the researcher precise flow control.
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Reaction Flask, Spherical, Jacketed
Ace GlassSpherical, jacketed reaction flask with 100mm (4") flat flange top. Jacket inlet/outlets available with either tangentially sealed 28/15 o-ring ball joints or with Ace-Thred connections. Use 6496-10 clamp to secure head to flask.
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Flask, Reaction, Spherical, Jacketed
Ace GlassRugged spherical jacketed reaction flask with Duran, flat, ground flange with O-Ring groove, for use with 6517 Quick Release Clamp. Each flask is supplied with one CAPFE O-Ring (PTFE encapsulated silicone O-Ring). 12L and larger are supplied with reference graduations. Inlet/outlets available with…
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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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Heavy wall cylindrical reaction flask with Duran grooved flange opening. Flask has Zero Dead Space, (ZDS), bottom valve. The valve features no material hang-up in the fully open position. When closed, the valve seats flush with the bottom of the flask. Includes one CAPFE o-ring. See Ace 6517 for…
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Flask, Tapered Wall
Ace GlassWalls tapered inward toward the bottom to allow continuous operation with smaller volumes. Flasks supplied with joint on center and two side necks. The four and five neck versions have one or two #7 Ace- Thred necks to accomodate thermometers and elect
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Flasks, Heavy Wall, Pear-Shaped, 2-Necks
ChemglassPear shape, HEAVY WALL 2-neck flask with standard taper outer joints. Flasks with a 10/18 outer joint on the side neck are used with either jointed thermometers or CG-1079 inlet adapters.
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Heavy Wall Buchner Funnels
Across InternationalAi heavy wall Buchner funnel with course frit, allowing you for vacuum filtering and separating solids from liquids.
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Equilibration Flask
Ace GlassDesigned by Dr. H.R. Krouse, University of Calgary, for use in H2O18/H2O16 determination. Unique design eliminates the use of grease or breakseals in CO2 recovery. Water samples are introduced by pipet into bulb by removing PTFE plug. After reinstating plug, degassing of water and CO2 is…
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SYNTHWARE Reaction Vessel, Photochemical
Kemtech AmericaReaction Vessel, Photochemical, Synthware, Joint: 14/20 + 24/40, #50 Internal Top Thread, #7 Arm Side Thread, 500mL Capacity.
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Jacketed reaction flask with round bottom. Flat flange is grooved for using an o-ring (instead of a flat gasket) to seal to a head. Jacketed for temperature control of ingredients. Supplied with CAPFE o-ring. Codes -01 thru -04 have 28/15 o-ring ball joints on inlet/outlet. Codes -301 thru -304…
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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. Flasks with 29/26 center necks have a groove tooled just below the grind to aid in clamping of the flask.
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Flasks, Heavy Wall, Pear-Shaped, 3-Necks
ChemglassPear shape, HEAVY WALL 3-neck flask with standard taper outer joints on the center and 20º angled side necks.
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Cylindrical Reaction Vessels with Flat Flange
SP Wilmad-LabGlassThese borosilicate glass cylindrical reaction vessels are without constriction at the top and have a flat bottom. They feature sturdy walls and a tooled flat flange with a surface ground to assure a tight seal. There is a gently sloping contour at junction of side wall and bottom, thus preventing…
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Flask, Pressure, Round Bottom
Ace GlassRound bottom, heavy wall, pressure rated flask. All flasks come complete with a solid PTFE plug seal with front seal FETFE o-ring for better containment of product. Vessels are tested at 1.5x for a working pressure rating at 60PSI at 120°C. Flasks
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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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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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Separation Tube, Glass, 24/40 Joints
GSC International, Inc.Our Separation Tube is made from heat-resistant borosilicate glass, and has a PTFE stopcock and a 24/40 ground glass joint. PRODUCT WARNINGS Our products are not toys . Use in a laboratory or educational setting only. Not for children 13 and under.
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Conical Flange Vessel Clamp
SP Wilmad-LabGlassThis clamp is designed for reaction vessels/kettles with a conical flange. The top clamp is easily removed without disturbing the cover or body of reaction flask. Disassemble by loosening nuts. Includes extension rod for clamping to a laboratory stand. NOTE: Use with LG-8010 to LG-8050 vessels…
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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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Round bottom, indented Morton Type, three neck flask. All flasks have angled side necks. Available in heavy wall. Indents enhance agitation during stirring.
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Head, Filter Reactor
Ace GlassReactor head, 60mm o-ring groove flange with (3) in-line 24/40 joints. Use with our 6384, 6386 and 6388 reactor bodies.
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3 Neck Flat Flange Reaction Vessel Cover
SP Wilmad-LabGlassFeaturing a center neck and two side necks with full length outer Standard Taper joints, this borosilicate glass 3-neck reaction vessel lid/cover has a flat flange. For use with large capacity cylindrical reaction vessels, 2000mL, 3000mL and 4000mL (LG-8082, LG-8084, LG-8085, and LG-8089). Flange…
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Round bottom single neck flask having a standard taper outer joint with a Chem-Vac™ Chem-Cap® valve sidearm. Plug may be removed for sampling from flask while a purge of inert gas is maintained thru the sidearm. Valve size is as listed.
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Round bottom, HEAVY WALL, three neck flask with standard taper outer joints on the center and side necks. Lower outlet is a CG-424-05, 4mm straight bore PTFE stopcock.