Glass Joints & Adapters
At Thomas Scientific, we stock an extensive range of glassware that is customizable and adaptable to suit your specific requirements. Choose between glass u-tubes, short path distillation heads, snyder columns, and much more.
High-quality glass adapters offer a smooth non-porous surface and carry additional features such as heat resistance and chemical compatibility, which makes them suitable for a range of laboratory applications. Benefit from leak-free and customizable connections with glassware pieces.
Transparent glass joints enable scientists to observe reactions and processes within the glassware to provide real-time monitoring of experiments.
Glass accessories include nmr tube cleaner to assist with keeping all glassware clean and contamination free.
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SYNTHWARE Sublimators
Kemtech AmericaSublimator, Two Piece, Synthware, Various sizes are available. O-Ring Size: 217, 226, or 229, Clamp Size: 35, 65, or 75 available.
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Scienceware® PTFE Sleeve Gaskets
SP Bel-ArtFor standard taper joints Knurled gripping-ring at top, which allows quick, simple removal from joint Easily cleaned For use with full or medium joints Three gaskets per package. Joint size given in listings below.
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Borosilicate glass transition adapter to convert beaded pipe 2 to standard taper joint.
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Adapters, Transfer
ChemglassUsed in the transfer of fluids from vessels having standard taper joints.
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Adapter, Bottom Drip, Luer
Ace GlassLuer, Bottom drip Adapter with or without flow regulator valve for use with ACE threaded columns. Shallow taper at upper end minimizes mixing below the packing support. Supplied with one FETFE O-Ring and one replaceable polyethylene packing support. For replacement packing support, either…
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Modified Dean-Stark receiver designed for solvents that are either lighter or heavier than water. The lower three-way PTFE stopcock allows for the withdraw or return of the distillate during the distillation process. With a 10/30 outer joint on the top of the vapor tube for a 3” immersion…
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Inlet Hose Adapter
DWK Life Sciences (Kimble)Ideal for use as a vent or for the introduction of pressure/vacuum Glass male Standard Taper joint with hose barb for tubing at 90° angle Thomas numbers 5737A01 and A03 take 1/4” tube fitting; others are 3/8”.
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Foam-Type Distillation Traps
DWK Life Sciences (Kimble)Placed above a boiling flask to prevent foaming-type reactions from entering either the distilling column or the condenser. Useful with rotary evaporators 517000 features a more extensive baffle system than other traps Manufactured from 33 expansion, low extractable borosilicate glass…
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Synthware "U" Shaped Drying Tubes
Kemtech AmericaSynthware "U" shaped drying tube. With a lower inner standard taper joint. Cotton is typically used to contain drying agent.
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Reaction Flask
Ace GlassWith 4 mm bore stopcock for rapid removal of contents without disturbing the general arrangement of the apparatus. 4 inch ID conical flange requires Ace product family 6496 clamp for securing the head to the flask.
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Adapter Connecting, NO-AIR
Ace GlassThree way, Y shaped adapter. 2-outer standard taper joints, 1-inner standard taper joint. All three the same size. Great for joining flasks and other components for Schlenk lines.
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Adapter, Connecting Hose
Ace GlassWith standard taper outer or spherical socket joint at one end and a hose connection at the other end.
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Adapter 19/22 O X 14/20
DWK Life Sciences (Kimble)For reducing the size of Standard Taper glass joints. Outer joint is at the top, inner at the bottom Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
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Synthware Vacuum Distilling Adapters
Kemtech AmericaWith two standard taper inner joints that are parallel and at a 75 degree angle to the connecting tube. Distance between joints is 100mm.
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Synthware Rotary Evaporator Traps
Kemtech AmericaSynthware rotary evaporator trap. Anti-climb design. Trap provides expanded volume for reactions that have a tendency to foam excessively. The inner vapor tube is sealed to the top of the trap to prevent entry into the condenser.
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Adapter, PTFE Pour Spout
Ace GlassPTFE threaded pour spout with fetfe o-ring prevents material contact with the threads.
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Adapter, Socket Joint to Tube
Ace GlassAdapter, socket joint to tubing, sized for compression fittings.
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With standard taper 24/40 joint and 8mm O.D. outlet tube bent at 75 degree angle.
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Synthware Vacuum Adapters with Outer Joints & PTFE Stopcocks
Kemtech AmericaSynthware vacuum adapter with a serrated hose connection turned 90 degrees to the standard taper outer joint. The PTFE stopcock has a 2 mm bore and is used to regulate the flow of gasses or liquids into reaction systems.
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SYNTHWARE Snyder Distillation Column
Kemtech AmericaSnyder Distillation Column, 3 Section Top Outer Joint: 24/40 Lower Inner Joint: 24/40 Column Height: 150mm Overall Height: 300mm For use with Kuderna-Danish flask.
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Adapters, Distillation, 75°
ChemglassAdapter has a standard taper outer joint at the top of the main tube for use with jointed thermometers. The 10/18 size is used with 10/18, 25mm immersion thermometers while the 10/30 is for use with 10/30, 75mm immersion thermometers. With inner joints on the bottom and sidearm at a 75º angle…
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Quartz immersion well, triple-walled, 60/40 inner joint for use in our 7841 and 7844 series photochemical reactor bodies. Designed for low temperature reactions cooled up to -78 degrees C. The outer two walls are permanently sealed and evacuated. The inner removable tube set consists of one each…
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Synthware Flushing Adapters
Kemtech AmericaSynthware flushing adapter is used to flush and fill attached vessels with an inert gas to provide protective storage. A ballon is connected to the top hose connection. An inert gas is connected to the side hose connection. The ballon can be expanded with inert gas at the same time as the vessel or…
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Similar in design to AF-0720 but without delivery adapter. Lower 3-way valve has been replaced with a single 0-4mm Chem-Vac™; Chem-Cap®; valve for draining distillate back into the flask. The uptake tube has one row of vigreux indentations, while the 14/20 top outer joint has been…
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Flanges, Reaction Kettle
ChemglassConical style flange has an I.D. of 4in with a flat, ground surface used for construction of reaction kettles or flasks. Tooled on tubing having an I.D. of 105mm and an O.D. of 115mm. Supplied with approximately 7in of tubing below joint. Available tooled on longer lengths of tubing. Please contact…
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Adapters, Vacuum Take-Off, 105°
ChemglassWith standard taper top outer and lower inner joints with sealed in drip tip. Adapter is bent at a 105° angle for use in vacuum distillation. Serrated hose connection has an O.D. of 10mm at the largest serration for connection to vacuum source.
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Distilling Head
Ace GlassWith finger type condenser and 0-3 mm PTFE stopcock plug with PTFE ring seals for reflux control. The seals prevent O-Ring exposure to corrosive liquids and are backed up by a FETFE O-Ring. Thermometer joint is 10/30, all others are 14/20.
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Adapter, Distilling
ChemglassAdapter is used to connect distilling column with vertical condensers. With standard taper outer joint at the top for use with 10/18 or 10/30 jointed thermometers. Both lower inner joints are the same size. Side arm is at a 75º angle to the vertical tube. For thermometers see CG-3506-N.
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Tube, Craig Recrystallization
Ace GlassMicroscale Craig tube for recrystallizing small quantities of reaction product. Craig tube recrystallization consists of a glass outer tube with non-uniform grind to purposely allow leakage, and a PTFE inner plug*. This plug eliminates breakage normally experienced with glass plugs. Volume stated…
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Synthware Distillation Connecting Adapters
Kemtech AmericaSynthware distillation connecting adapter. With standard taper top outer joint and inner joints at bottom and the side arm. Bottom and side arm joints are angled at 75 degrees to one another.