Chemistry Stopcocks

Lab Glass Stopcocks play an essential role in laboratory settings. They are precision instruments used for controlling the flow of gases or liquids through tubing. These tools, including lab stopcock valves and glass stopcocks, come in various configurations, such as 2-way stopcocks and 3-way stopcocks, to accommodate different experimental setups.

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.

Chemistry Stopcocks

Products (69)

Compare Tool

Select up to 3 products

  • PYREX® Plain Bore Rotaflo® Three-Way Stopcock

    These high performance Rotaflo® three-way stopcocks can be adjusted from a 0 to 3mm bore opening and have 8mm 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® stopcock...

  • Stopcock Plugs, Straight Bore

    These Stopcock Plugs are designed for precise control of fluid flow in laboratory glassware. The straight bore design allows for unobstructed flow and easy cleaning, ensuring efficiency in fluid handling tasks. Made from high-quality materials, these plugs offer durability and are resistant to...

  • SYNTHWARE Glass Straight Bore Stopcock Plugs

    Providing precision control over the flow of liquids or gases during laboratory experiments, these stopcock plugs are made of high-quality glass for durability and reliability. Their straight bore design ensures a consistent, unobstructed flow, while the robust construction guarantees long-lasting...

  • PYREX® Brand Stoppers

    Full length stoppers, closed at bottom, with penny head Conform to ASTM Standard E 675

  • PYREX® 0-3mm Plain Bore Rotaflo® Two-Way 90° Angle Stopcock

    These high performance Rotaflo® 90° angle stopcocks can be adjusted from a 0 to 3mm bore opening and have 8mm 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® stopcock...

  • Stopcock, High Vacuum, T-Bone

    Precision grade with T-Bore hollow or solid plug.

  • SYNTHWARE High Vacuum Valve Metering Plugs

    High Vacuum Valve Meteing Plug, PTFE Protected, Synthware, Size: 0-4, 08 and 0-12mm available. The High Vacuum Valve Metering Plugs, from the trusted brand Kemtech America, are designed for precise control and durability in high vacuum applications. These metering plugs are ideal for regulating the...

  • Stainless Steel Spigot

    Very 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 Thread...

  • Replacement PTFE Product Standard 4mm Straight Bore Stopcock Plug Assembly

    These are replacement Polytetrafluorethylene (PTFE) Product Standard stopcock plug assemblies with 4mm and 6mm diameter bores for No. 7282 PYREX® straight bore PTFE stopcocks. For more information on PTFE stopcocks, please check the Care of Corning PYREX® PTFE Stopcocks under Technical Literature.

  • PYREX Brand Stopcocks

    Valves, In-Line, Rotaflo® For vacuum or pressure work Borosilicate glass, with Teflon® stem providing chemically inert seal Require no lubrication Permit precide control of liquid or gas flow at temperatures from -40°C to +200°C Maximum vacuum 10 -8 torr (10 -6 Pa) Plastic control...

  • Valve High Vac PTFE Sz 12

    DWK Life Sciences (Kimble)

    This straight high-vacuum valve is for use in vacuum applications up to 5 x 10-7 Torr. Designed with a precision external thread for fine control Can be used as a bleed up to 1/2 turn Full open position is at 1-1/2 turns Primary seal is made with a FKM o-ring on a tapered seat Non-rotating PTFE...

  • Stopcock Plugs, T-Bone

    T-Bore stopcock plugs available in borosilicate or 1:5 PTFE.

  • SYNTHWARE Glass T-Bore Stopcock Plugs

    Replacement Stopcock Plug, T-Bore, Glass, Synthware, Multiple Bore and plug sizes available, solid glass plug.

  • SYNTHWARE Glass High Vacuum Double Oblique Bore Stopcocks

    Stopcock, High Vacuum, Double Oblique, Synthware, Bore: 4mm, Plug Size: 17.35/50, Stem OD: 10mm, With solid glass plug, Precision ground with corresponding numbers on the barrel and the plug.

  • T-Bore Capillary Arms PTFE Plug Stopcocks

    T-BORE, CAPILLARY ARMS, Similar to CG-436, but with all three arms being made of 2mm ID capillary tubing. 120°, A 1:5 taper PTFE stopcock with three sidearms sealed 120º apart. Plug has a bore to allow connection of any two arms at once.

  • SYNTHWARE High Vacuum Valves, Low Hold Up

    High Vacuum Valve, Low Hold Up, PTFE Protected, Synthware, Size: 0-4, 0-8, 0-12mm available, Side Arm OD: 9mm.

  • SYNTHWARE High Vacuum Valve Plugs

    High Vacuum Valve Plug, PTFE Protected, Synthware, Size: 0-4, 0-8 or 0-12mm available, Plug has a machined in PTFE tip O-ring to make the primary seal.

  • Stopcock, 4 mm, w/o Plug

    DWK Life Sciences (Kimble)

    Without Teflon plug Offered in 4 mm bore size; see 8682B34 for stopcock

  • High Vacuum Double Oblique Stopcocks

    Hollow 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.

  • SYNTHWARE PTFE Double Oblique Bore Stopcocks

    Stopcock, Double Oblique, PTFE, Synthware, Bore: 2 or 4mm available, Plug Size: 12.9/44 or 14.4/44 available, Stem OD: 8 or 10mm available.

  • Stopcock, High Vacuum, Solid Plug

    Three-way high vacuum oblique bore stopcock with liquid seal. The solid plug is bored to permit evacuation of the lower chamber and prevents leakage through the bottom.

  • Stopcock Assembly

    Thermo Scientific Nalgene

    Phase interface visible down to stopcock. Polypropylene funnel and screw closure are chemically inert, translucent, autoclavable and have no known solvents at room temperature. Susceptible to softening and swelling from strong oxidizers and aggressive solvents. TFE stopcock assembly has excellent...

  • Stopcock Rotaflo 6 mm Ra

    These high performance Rotaflo® 90° angle stopcocks can be adjusted from a 0 to 6mm bore opening and have 10mm O. D. sidearms. They are designed so that only chemically resistant Polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases....

  • T-Bore Glass Plug Pressure Stopcocks

    Similar to CG-458, but with three stems sealed 90º apart. Solid glass plug has a "T" shaped bore so that any two or all three arms can be connected at one time. Plug is precision ground and hand-lapped with corresponding numbers on the barrel and plug. 

Compare Tool

Select up to 3 products