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 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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Flask, Flat Bottom, Three Neck
Ace GlassFlat bottom, three neck flask can sit on stirrer hot plate with no further support. 250ml and 500ml sizes feature angled side necks while the 1000ml size necks are vertical.
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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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4 Neck O-Ring Flange Reaction Vessel Covers for Size 359 O-Rings
SP Wilmad-LabGlassFeaturing a center neck and three side necks with full length outer Standard Taper joints, this borosilicate glass 4-neck reaction vessel lid/cover has a 6-5/8" flange O.D. and comes with a size 359 O-ring. Designed to be used with 2000mL, 3000mL, and 4000mL cylindrical reaction vessels…
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Scale-Up Series™ Cylindrical Flasks
Ace GlassScale-Up Series™ cylindrical flasks with an Easy Drain glass valve. The flask is graduated on both sides allowing for either left or right hand flask orientation. The Easy Drain valve is designed to prevent accidental removal when opening and inc
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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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Round bottom, HEAVY WALL, five-neck flask with standard taper outer joints on the center neck and vertical side necks.
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KIMAX Sugar Flasks
DWK Life Sciences (Kimble)Kohlrausch, Class A Borosilicate glass Calibrated to contain 20°C Mouth enlarged for easier introduction of sample Meet NBS requirements
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Glassblowers Flask Blanks, Pear Shaped
ChemglassBlanks for fabrication of pear-shaped flasks. NOTE: NECK IS UNFINISHED, FLASK CANNOT BE USED WITHOUT MODIFICATION OF NECK.
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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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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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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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Flask, Single Neck, Flat Bottom
Ace GlassFlat bottom flask featuring a single, short neck with a standard taper outer joint.,/p>
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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 flask with a standard taper outer joint and a side well to accept a thermometer. Top of thermowell is tooled to accept a #0 rubber stopper.
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Jacketed Cylindrical Reaction Vessels with Flat Flange
SP Wilmad-LabGlassThese jacketed, cylindrical borosilicate glass 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…
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This is a 1L PYREX® replacement flask with a 29/42 outer Standard Taper joint for the No. 3840-XL 1L extractor system. The tubulation O.D. on the condenser is 10mm.
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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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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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SYNTHWARE Storage Flasks with High Vacuum Valve
Kemtech AmericaSYNTHWARE storage flask with high vacuum valve and side arm. Valve has a PTFE o-ring at the tip and PTFE wiper to protect the Viton o-ring on the shaft.
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Peptide Synthesis Vessel, Solid Phase, Synthware, Capacity: 25-500mL Available, Disc Porosity: Medium or Coarse available, Frit OD: 25-80mm available, Thread Size: 25 and 32 available, Joint Size: 24/40 Inner with drip tip, Hose Connection: 8mm, Supplied with PTFE-lined screw cap and T-bore PTFE…
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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
ChemglassPear shape HEAVY WALL flask with a standard taper outer joint.
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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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European style flask with tapered walls and a shallow hemispherical bottom for more efficient mechanical or magnetic stirring. With standard taper outer joints on center and side necks and a #7 Chem-Thread for insertion of thermometers or bleed tubes having an O.D. between 4 and 7mm.
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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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Benchtop Reactor, All-in-one
Ace GlassA complete, general purpose benchtop reactor. Self-supported with a 20 x 15in footprint, 33 in high. Reactor features a 100mm (4 in) head with (4) 24/40 joints, an allihn condenser, a pressure equalizing funnel, overhead glass stirring assembly with variable speed motor and controller, heating…
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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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VITLAB, PFA Round Bottom Flasks
BrandTech®These corrosion- and leach-resistant flasks are excellent for rotary evaporation and distillation of high-purity chemicals. They are manufactured from PFA (a perfluoroalkoxy polymer) for excellent resistance to heat and chemical contamination, as well as smooth surfaces that greatly simplify…