Lab Glass Stopcocks
The versatility of stopcock manifolds allows for simultaneous control of multiple channels, streamlining complex procedures. These stopcocks, highly valued for their precision and reliability, ensure accurate flow regulation, a crucial factor for you to maintain consistent experimental conditions with confidence.
Their glass construction provides a chemically inert interface and allows for easy cleaning and sterilization, supporting a broad range of scientific applications. Each feature—from the durable glass stopcocks to the flexible stopcock manifolds—highlights the importance of precision and adaptability in achieving successful laboratory outcomes.
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General Purpose Threaded Stopcock
ChemglassSimilar to CG-595, but with the arms bent to minimize hold-up.
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Solid glass plug has a threaded glass snelling which accepts an assembly similar to the one supplied with standard PTFE stopcocks. This consists of a PTFE washer, PTFE nut and Viton O-ring. Assembly provides for uniform seating tension to be applied to the plug which is precision ground and…
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SYNTHWARE High Vacuum Valves, 90 Degree
Kemtech AmericaHigh Vacuum Valve, 90 Degree, Synthware, Size: 0-4mm, Side Arm OD: 9mm.
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High Vacuum 90° 4mm Stopcock
ChemglassSimilar to CG-476, but with the sidearms sealed at a 90º angle to each other. Precision ground and hand-lapped with corresponding numbers on barrel and plug.
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Needle Valves, V-Point
Scott SpecialtyWith forged brass body, sharp stainless steel needle and small opening at the seat for accurate control of small flow of gases at inlet pressures up to 3000 psig at 70°F (20.7 MPa at 21.1°C) Maximum temperature rating: 450°F (232°C) Useful also for water, compressed air…
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Stopcock adapter featuring either a bent or straight hose connection and a PTFE plug.
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Adapter, Stopcock, Hose connection
Ace GlassStopcock adapter featuring either a bent or straight hose connection and a glass plug.
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T-Bore PTFE Plug Stopcocks
ChemglassA 1:5 taper PTFE stopcock with three stems sealed 90º apart. PTFE plug has a "T" shaped bore to connect any two or all three stems.
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High Vacuum T-Type 4mm Stopcock
ChemglassSimilar to CG-478, but with the addition of an extra horizontal sidearm. Precision ground and hand-lapped with corresponding numbers on barrel and plug.
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High Vacuum Double Oblique Stopcocks
ChemglassHollow plug, double oblique bore stopcock is precision ground with corresponding numbers on barrel and plug. Lower vacuum chamber is evacuated with a separate hole in the plug which is not in the line of flow.
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Three-Way Stopcock Valve, 2 Female Luers to Male Luer
DWK Life Sciences (Kimble)Heavy-duty nylon, 3-way control with locking fittings on all ports.
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Stopcock, 2 mm
DWK Life Sciences (Kimble)As supplied with 1983J70 and J76 Kimble Economy Burets Plug bore two mm Also for replacement on Kimble 17800 and 17810 series Chromatography Columns and Kimble 29050-H and 29060-H series Separatory Funnels.
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Organic Chemistry Labset Kit
ChemglassORGANIC CHEMISTRY LABSET KITS, 19/22, Chemglass organic chemistry kits contain the basic glassware required to perform basic experiments such as vacuum or atmospheric distillation, reflux or reflux with addition, extraction as well as other organic experiments. Each kit contains the 14 glass items…
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Straight Bore 1-Arm Larger Stopcocks
ChemglassSimilar to CG-424 but with one arm of the stopcock being of a larger diameter. Larger arm facilitates construction of stronger apparatus such as separatory funnels and burets. Available complete with 1:5 taper PTFE plug or glass shell only. FOR REPLACEMENT PLUGS, SEE CG-424 LISTING
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A 1:5 taper PTFE plug having a threaded needle valve to allow the adjustment of flow through the bore of the plug.
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Straight Bore Glass Plug Stopcocks
ChemglassSTOPCOCKS, STRAIGHT BORE, GLASS PLUGS, CAPILLARY ARMS, Similar to CG-400, but with the sidearms being made of capillary tubing having the same bore as the plug. Supplied complete with metal retaining clip CG-423. STOPCOCKS, STRAIGHT BORE, SCHLENK, GLASS PLUGS, This stopcock is especially…
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S-Type Exposed O-ring Tip Valves
ChemglassHi-vac valve with two sidearms sealed to the barrel at a 180° angle to one another and on the same plane.
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180° PTFE Tip Valves
ChemglassHi-vac valve with two sidearms sealed to the barrel at a 180° angle to one another and on the same plane.
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Straight Bore 1-Arm Capillary Stopcocks
Chemglass1-ARM CAPILLARY Similar to CG-424, but with one arm being made of 2mm ID capillary tubing. CAPILLARY ARMS Similar to CG-424, but with both arms being made of 2mm ID capillary tubing.
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Stopcock, Straight Bore, Glass Plug
Ace GlassA ruggedly constructed stopcock with solid glass plug and tapered flange which insures maximum strength at the seal. Bore of side arms is equal to or slightly larger than bores of plug on all sizes. For plugs, see 8223.
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Used to regulate and measure flows, all working parts and indicia are visible, meter readings are unobstructed; the outlet swivels 360 degrees. Pressure tight to 2Kg/cm2 or more (air). Flow rates from 5 to 50L/minute air or 0.1 to 500cc/min water. Each tube is furnished with either a 316 stainless…
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Stopcocks
ChemglassFor replacement or construction of burets having a 1:5 PTFE stopcock plug. One arm is pulled to a delivery tip.
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High Vacuum T-Bore Stopcocks
ChemglassSolid glass high vacuum stopcock with the NEW Chemglass improved constant pressure retention device. This unique retaining system incorporates a glass plug having an extended snelling which accepts a stainless steel spring and clip. The spring keeps constant tension on the plug at all…
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Stainless Steel Spigot
BürkleVery sturdy and robust spigot made of stainless steel AISI 304 (1.4301). The outlet of the spigot turns 360° so it can be adjusted to any required position. With a practical suspension device for filling container and eyelet for shutting off the spigot. Seals PTFE, FKM Self-closing …
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Nalgene Polypropylene Straight Bore Stopcocks
Thermo Scientific NalgenePolypropylene with Teflon® TFE plug No lubrication required Offered in 2 mm and 4 mm bore sizes Arms are five-mm bore, serrated to take 1/4 to 7/16 inch rubber tubing
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SYNTHWARE Glass High Vacuum Oblique Stopcocks
Kemtech AmericaStopcock, High Vacuum, Oblique, Synthware, Bore: 4 and 8mm, Plug Size: 17.35/50 or 25/65 available, Stem OD: 10 or 16mm, with hollow plug, Precision ground with corresponding numbers on the barrel and the plug.
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SYNTHWARE Glass Straight Bore Stopcock Plugs
Kemtech AmericaStopcock Plug, Glass, Straight Bore, Synthware, Multiple Bore and plug sizes available.
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Adapter, Septum Inlet, with Stopcock
Ace GlassAir-sensitive sample handling adapter features either a glass or PTFE t-bore stopcock, standard taper joint and septum port arms. Supplied with two septa, Ace 9096 family.
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Centrifuge Tubes
ChemglassTUBES, CENTRIFUGE, 50ML, Centrifuge tube with a short, conical bottom and 24-415 GPI threaded top. Fits I.E.C. shield number 320. Supplied complete with a Poly-Seal® polypropylene lined phenolic screw cap. TEST TUBE TONGS, Tongs are made of zinc coated steel, 6" overall length. Spring…
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SYNTHWARE Glass High Vacuum Stopcocks, T-Type
Kemtech AmericaStopcock, High Vacuum, T-Type, Synthware, Bore: 2 or 4mm available, Plug Size: 12.6/40 or 17.35/50 available, Stem OD: 8 or 10mm available, with hollow glass plug, Precision ground with corresponding numbers on the barrel and plug.
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These high performance Rotaflo® 90° angle stopcocks can be adjusted from a 0 to 10mm bore opening and have 13mm O. D. sidearms. They are designed so that only chemically resistant Polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases. The Rotaflo®…
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