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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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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Bench scale, 1000 - 6000mL, Clean-In-Place sprayer for use with either pressurized or vacuum assisted flask washing. All PTFE construction. Four, 3 inch sections with available extenders allow flexibility. Ace recommends that the sprayer ball be positi
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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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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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Head, Duran Flange
Ace GlassProduct family consisting of large spherical flasks and the heads that complement them. Flasks that feature a bottom outlet have descriptions that state the outlet's type, otherwise the flask has no outlet.
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Hydrogenation/Gas Apparatus I
Ace GlassParr Model 3911 Hydrogenation unit for working volumes of 1ml to 200ml . Ace-thred vessels replace rubber stoppered vessels and eliminate cross-over contamination caused by leeching or sample retension. Complete unit includes all adapters needed for the supplied 8648 series bottles…
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Round bottom, borosilicate flask for NO-AIR and vacuum applications. Ideal for storage or reactions. 0-4mm Hi-Vac valve for precise control of flow. 15mm o-ring joint side arm for connecting to schlenk lines. 7855-726 Fetfe o-ring included.
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4 Neck Reaction Vessel Covers
SP Wilmad-LabGlassFeaturing a center neck and three side necks with full length outer Standard Taper joints that are 120° apart, these borosilicate glass reaction vessel lids have a conical flange. Bottom flange ID is 4" and ground for a leak-proof fit with a reaction flask. For use with reaction vessels…
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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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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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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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Reaction Flask, Removable Stopcock
Ace GlassWith 4mm bore stopcock for rapid removal of contents without disturbing the general arrangement of the apparatus. Stopcock is separated from lower section by 28/15 joint. Neck opening is standard 10.2cm (4"). For joint clamp, order 7669-12. Use 6496 Cl
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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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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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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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Flask, Reaction, Cylindrical
Ace GlassCylindrical, heavy wall reaction flask with extra thick flat, ground flange. Without constriction at top to facilitate introduction/removal of material and allow for ease of cleaning. Available in 1L to 4L capacities, flat bottom and round bottom, with
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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 Reaction, Hi-Vac Valve NO-AIR
Ace GlassRound bottom borosilicate glass flask with standard taper center neck and a 0-4 Hi-Vac valve for precise control. Flask is ideal for simple NO-AIR and vacuum applications. Outlet arm is 8MM and can be fitted with a rubber septa for insertion of samples or additives via syringe.
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Determines CO2 evolution to assess biodegradability by soil and sewerage micro-organisms. Shake flask fits standard laboratory shakers. #7 Ace-Thred side port with Nylon bushing and FETFE O-ring holds a glass septum adapter. Inner well has a capacity of 10 mL plus head space. Well is held securely…
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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.
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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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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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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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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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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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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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SYNTHWARE Modified Schlenk Flasks with Teflon® Stopcocks
Kemtech AmericaSYNTHWARE modified Schlenk flask with a standard taper outer joint and a 2mm bore PTFE 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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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 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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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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CELLine Adhere
Argos TechnologiesCELLine Flasks are ideal for monoclonal antibodies and expressed recombinant cellular protein production. Viable in vitro alternative to using, standard cell culture or tissue culture products or mouse ascites. Bioreactors utilize innovative membrane technology to separate the cell cultivation area…
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Kriel Reactor, Photochemical
Ace GlassReactor is most useful in prep-scale photolysis and features tapered sides which assures full submersion using our 7825-34 or 7825-36 lamps within the supplied quartz immersion well. A 20% savings in reaction time over round bottom flasks. Additionally