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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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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Heavy Wall blanks are 30% heavier than our standard CG-618 series. Blanks are used in the fabrication of single or multi-neck round bottom flasks. NOTE: NECK IS UNFINISHED, FLASK CANNOT BE USED WITHOUT MODIFICATION OF NECK.
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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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Glassblowers Flask Blanks, Flat Bottom
ChemglassBlanks for fabrication of single or multi-neck flat bottom flasks. NOTE: NECK IS UNFINISHED, FLASK CANNOT BE USED WITHOUT MODIFICATION OF NECK.
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SYNTHWARE Modified Schlenk Flasks with High Vacuum Valves
Kemtech AmericaSYNTHWARE modified Schlenk flask with a standard taper outer joint and a 0-4 mm high vacuum valve in the side arm. The valve has a PTFE o-ring at the tip. The Kjeldahl shape permits easy transfer of liquids and solids. The lower portion of the flasks fits standard heating mantles to facilitate…
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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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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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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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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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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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Rugged cylindrical jacketed reaction flask with Duran, flat, ground flange and o-ring groove. Various bottom outlet options are available (see details below). For use with 6517 quick release clamp. Jacket inlet/outlets are available with either tangentially sealed o-ring ball joints or with…
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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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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. Lower outlet is a CG-424-05, 4mm PTFE straight bore stopcock.
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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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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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SYNTHWARE Reaction Tubes with High Vacuum Valve
Kemtech AmericaSYNTHWARE cylindrical reaction tube with a standard taper outer joint and a high vacuum valve sidearm. Useful for sample storage or simple reactions. Valve plug may be removed to sample from the tube while an inert gas purge is passed through the sidearm.
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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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Head, Duran Flange
Ace GlassFlat ground flange for use with all Reaction Flasks that have a 150mm (6") Duran ground mating flange. Supplied with three in line ground joints and one or two 90 degree joints. For thermometer or probe adapter, see our 5028 series. For clamp, see 6517.
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Flask, Two Necks, Pear-Shaped
Ace GlassPear-shaped, with side arm for use with 9095 rubber thermometer adapter. Joint is 14/20.
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Round bottom, indented Morton Type, three neck flask. 500ml and 1L sizes have angled side necks while larger sizes feature vertical necks. Available in heavy wall. Indents enhance agitation during stirring.
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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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3 Neck O-Ring Flange Reaction Vessel Cover for Size 359 O-Rings
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 an 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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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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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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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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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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CELLine Bioreactor Flasks
Argos TechnologiesCELLine Flasks are ideal for monoclonal antibodies and expressed recombinant cellular protein production. Viable in vitro alternative to using mouse ascites, standard cell culture or tissue culture products. Bioreactors utilize innovative membrane technology to separate the cell cultivation area…
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Complete reaction assembly available in 12L, 22L, 50L and 72L spherical flask capacities. Unit is complete with heating mantle and controls, mechanical stirrer and controls, pressure equalizing funnel and pilot plant condenser.
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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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Reaction Flask Head, Four Neck
Ace GlassHead with four necks, three inline standard taper joints and one 90 degree joint. 10/30 size for use with our 8314 family of jointed thermometers. Use with our 6504, 6511 & 6516 reaction vessels that feature either a 137 x 100mm ID or 168 x 130mm ID flat flange. Use with our 6508 or 6510 clamps.…
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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.