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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Scale-Up Series™ jacketed cylindrical flasks with Easy Drain glass valves and KF flange inlet & outlets. 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 incorporates…
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Flasks, PFA, Round Bottom, Three Neck
ChemglassAll PFA three neck round bottom flask with standard taper outer joint center neck and two additional 20° angled side necks. Allows assembly with a temperature probe, electrode or tube. Flask can withstand MAX temperature of 250°C and a MIN temperature of -200°C.
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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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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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Flask, Trypsinizing
ChemglassManufactured from Type 1 Class A borosilicate glass with FOUR deep side baffles for optimum agitation during trypsinization. Flask comes with beaded, break-resistant lips and 50mm OD necks. Sold 1 per case.
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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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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…
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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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Round bottom, HEAVY WALL three neck flask with standard taper outer joints on the center and 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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Thomas Nos. 1165M15, 1165M16, 1165M17, 1165M18, 1165M19, 1165M20, 1165M21 Jacketed cylindrical flask with flush seal and beaded pipe²inlet and outlets. The flask is graduated on both sides²which allows for either left or right hand orientation.²Features a Schott-Duran style o-ring…
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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, HEAVY WALL three neck flask with standard taper outer joints on the center neck and vertical 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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Similar to 9844-07 Vessel except jacketed to provide active cooling from tap water or mechanical cooler. Jacket is cylindrical with flat bottom for greater stability. With #25 Ace-Thred center neck and two 14/20 side necks. Code -30 includes our 7506-10 #25 Ace-Thred bushing used to secure a…
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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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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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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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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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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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PYREX® Hickman Still Head
CorningThis Hickman Still Head is a replacement part for the 6949M series of PYREX® microchemistry kits.
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Storage Flasks, Cajon, Airfree®, Schlenk
ChemglassStorage flask sidearm has a 9mm OD tubulation for use with 3/8" Cajon® connections. Chem-Vac™ Chem-Cap® valve is used to control gas or liquid flow into the vessel.
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Round bottom,single neck,all PTFE boiling flask. Maximum temperature 260 degrees C.
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Glassblowers Flask Blanks, Round Bottom
ChemglassBlanks for fabrication of single or multi-neck round bottom flasks. NECK IS UNFINISHED, FLASK CANNOT BE USED WITHOUT MODIFICATION OF NECK.
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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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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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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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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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Glassblowers Flask Blanks, Recovery
ChemglassBlanks for fabrication of recovery flasks. NOTE: NECK IS UNFINISHED, FLASK CANNOT BE USED WITHOUT MODIFICATION OF NECK.
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Flask, European Style
Ace GlassEuropean style, tapered walls with shallow bottom for more efficient magnetic or mechanical half-moon shaped paddle stirring. Supplied with center neck, two side necks. Available with 1 additional #7 Ace-Thred or 2 additional #7 Ace-Threds complete wit
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Flask, Reaction, Cylindrical, Jacketed
Ace GlassRugged cylindrical reaction flask with Duran, flat, ground flange and o-ring groove, with water/steam jacket. Jacket inlet/outlets are available with either 35/25 o-ring ball joints (sealed tangentially) or with Ace-Thred connections. For use with 6517 quick release clamp. Flask supplied with one…
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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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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.