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1690-STOPCOCKS, NEEDLEVALVE, RIGHT ANGLE 90° GP

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1690-STOPCOCKS, NEEDLEVALVE, RIGHT ANGLE 90° GP

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  • Chemical Resistant
  • Rota flow
  • Material: Borosilicate glass 3.3
Part no. Bore Range mm Outside Diameter of Stems mm Pack Qty.
1690-8 0-3 8 10
1690-10 0-6 10 10
1690-13 0-10 13 10

Here are some common uses for stopcocks with needle valves in a right-angle 90° design with a General Purpose designation:

  1. Laboratory Glassware:
    • Stopcocks with needle valves in a right-angle 90° configuration are fundamental components of laboratory glassware setups, providing precise control over the flow of liquids or gases in various experimental procedures.
  2. Chemical Synthesis:
    • These stopcocks are used in chemical synthesis processes to control the addition of reagents, the flow of reactants, or the collection of reaction products with precision, especially when a right-angle connection is needed.
  3. Titration Experiments:
    • In titration experiments, needle valve stopcocks with a right-angle 90° design are used to control the flow of titrant during the titration process, ensuring accurate and controlled addition.
  4. Liquid Chromatography (LC):
    • These stopcocks can be integrated into liquid chromatography systems to control the flow of mobile phases or eluents during separation processes, especially in systems where a right-angle connection is advantageous.
  5. Gas Chromatography (GC):
    • In gas chromatography setups, needle valve stopcocks with a right-angle 90° design are utilized to control the flow of carrier gases, samples, or other gases within the system.
  6. Reaction Setups:
    • Needle valve stopcocks with a right-angle configuration are used in experimental setups where precise control of the addition or mixing of reactants is required, especially in setups with tubing or connections at right angles.
  7. Vacuum Applications:
    • Right-angle needle valve stopcocks can be used in vacuum systems to control the flow of gases or liquids under reduced pressure, especially when a right-angle connection is needed.
  8. Analytical Chemistry:
    • In analytical chemistry experiments, these stopcocks are used to control the flow of solutions during sample preparation or analysis, particularly when a right-angle connection is preferred.
  9. Quality Control Processes:
    • Stopcocks with needle valves in a right-angle 90° configuration are used in quality control procedures to precisely control the addition of standards, reagents, or solutions during analytical testing.
  10. Standardization of Glassware:
    • Compliance with industry standards ensures that the stopcocks meet specific quality and safety criteria, contributing to the standardization of laboratory glassware.
  11. Educational Demonstrations:
    • These stopcocks are used in educational settings to demonstrate principles of fluid control and precision in laboratory experiments, especially in setups involving right-angle connections.
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