Specialty Flasks
Our 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. Each of these products is designed to meet the unique requirements of various 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 3neck flask for your lab, we offer a wide range of options, ensuring you find the perfect vessel for your experiments. Trust our specialty flasks to provide the precision and durability your research demands. Thomas Sci also offers a variety of other flasks depending on your needs.
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Scale-Up Series™ Bench-Top Reactor
Ace GlassAce Glass Scale-Up Series™ plain bench-top reactor base system includes the essential items needed to begin building a customized reactor specifically for your application. Reactors scale-up from 100mL to 6000mL on the bench and their geometry tr
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Round bottom, borosilicate flask with two necks and a side port with either a 2mm glass stopcock or a 0-3 Inlet valve. Excellent flask for reactions and NO-AIR or vacuum applications. Side port is available with either a 2mm glass stopcock or a 0-3 Inlet valve with 8mm end for use of a rubber septa.
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Round bottom, HEAVY WALL three neck flask with standard taper outer joints on the center and 20º angled side necks. Indentations increase agitation of the contents of the flask during stirring. Please Note: Morton Style Reactors/Flasks Not Suitable For Vacuum.
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SYNTHWARE Modified Schlenk Flasks with Glass Stopcocks
Kemtech AmericaSYNTHWARE modified Schlenk flask with a standard taper outer joint and 2mm bore glass 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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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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Flask, Jacketed, with Polished Joint
Ace GlassJacketed version of standard 9448 Flask. Furnished with polished 45/50 outer joint so that it can be used with 9443-20 or 9446 Heads with PTFE-Clad joint which does not require lubricant and does not freeze under high temperature, vacuum operation.
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Round bottom, HEAVY WALL, three-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. Indentations increase agitation of the contents of the flask during stirring. …
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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 Reaction Tubes with Glass Stopcock
Kemtech AmericaSYNTHWARE cylindrical reaction tube with standard taper outer joint and 2mm bore glass stopcock sidearm. Useful for sample storage and simple reactions. The stopcock has a constant pressure retention device.
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Rugged cylindrical reaction flask Duran, flat, ground flange and O-ring groove, with an Easy Action Plug bottom outlet with Chemraz O-Rings for draining contents. For use with 6517 quick release clamp. Each flask is supplied with one CAPFE O-Ring (PTFE encapsulated silicone O-Ring). Plain silicone…
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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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Kjeldahl shape facilitates heating and stirring while permitting easy transfer of liquids or solids. Lower portion of flask fits standard heating mantles. 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®…
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Lower half of flask has a jacket permitting heating or cooling of the contents with fluid from a constant temperature bath. The unique design of the Chem-Drain valve incorporates a PTFE plunger that allows the contents of the flask to drain directly through the bore of the plunger. When closed,…
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Cylindrical Reaction Vessels with O-Ring Flange
SP Wilmad-LabGlassThese borosilicate glass cylindrical reaction vessels have a tooled flat flange with an O-ring groove for a greaseless seal. Suitable for vacuum operation. Wall thickness is uniform throughout flask. Note: Use LG-7316 clamps.
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Cylindrical Jacketed Reaction Vessels with O-Ring Flange
SP Wilmad-LabGlassThese cylindrical borosilicate glass reaction vessels are jacketed with 1/2" hose connections. They have a tooled flat flange with an O-ring groove for a greaseless seal. Suitable for vacuum operation. Wall thickness is uniform throughout flask. NOTE: Use LG-7316 clamps.
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SYNTHWARE Round Bottom Pressure Vessels
Kemtech AmericaPressure Vessel, Round Bottom, Synthware, Capacity: 75, 15, or 350mL available, OD: 46-80mm available, Length: 129-162mm available, GL Thread: 15 or 25 available.
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Rugged spherical 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 reaction…
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Fully jacketed, european style flasks with tapered walls and shallow bottoms for more efficient half-moon shaped paddle stirring. Jacket has hose connection inlet/outlet. Available in three necks or 5 neck version featuring two #7 Ace-Thred joints with
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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.
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Iodine Flasks
CorningFor the determination of the iodine number of oils, fats and waxes by the Wijs and Hanus methods Flaring, funnel-shaped lip and Standard Taper 22 stopper
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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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Chapman Specific Gravity Flask
Gilson Co. Inc.Chapman Specific Gravity Flask determines percentage of surface moisture and voids in fine aggregates Upper and lower bulbs contain 175ml and 200ml Stem is graduated from 375—450ml
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Reaction Flask Head
Ace GlassHeads with three necks (inline) that fit our 6504,6511&6516 reaction vessels that feature either a 137 x 100mmID or 168 x 130mmID flat flange. Use with our 6508 or 6510 clamps. For improved sealing of flat ground flanges, please see our 6495 product family of gaskets. Note: vessels with o-ring…
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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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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
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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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Flask, Single Neck, Pear Shaped
Ace GlassPear-shaped, single neck, heavy duty flask. Available with ground, polished and cap-seal joints. The cap-seal flasks are used in the Ace microscale chemistry product line and feature a 14/10 ground joint with external threads. Supplied with a holed cap
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Flasks, Heavy Wall, Pear Shaped
ChemglassPear shape HEAVY WALL flask with a standard taper outer joint.
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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, 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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Adapter Connecting, Side Outlet, NO-AIR
Ace GlassUsed for converting a single neck round bottom flask to air-free or vacuum applications. Outlet can be either 2mm glass stopcock or a 0-3 inlet valve. Upper and lower joint sizes are the same size. Great for adapting flasks and other components for Schlenk lines.