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  • Material: Borosilicate glass 3.3
  • Chemical Resistant
  • Rota Flow
Part no. Bore Range mm Outside Diameter of Stems mm Pack Qty.
1680-8 0-3 8 10
1680-10 0-6 10 10
1680-13 0-10 13 10

Here are some common uses for stopcocks with needle valves in a straight design with a General Purpose designation:

  1. Laboratory Glassware:
    • Stopcocks with needle valves in a straight 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.
  3. Titration Experiments:
    • In titration experiments, needle valve stopcocks with a straight 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.
  5. Gas Chromatography (GC):
    • In gas chromatography setups, needle valve stopcocks are utilized to control the flow of carrier gases, samples, or other gases within the system.
  6. Reaction Setups:
    • Needle valve stopcocks with a straight design are used in experimental setups where precise control of the addition or mixing of reactants is required.
  7. Vacuum Applications:
    • Straight needle valve stopcocks can be used in vacuum systems to control the flow of gases or liquids under reduced pressure.
  8. Analytical Chemistry:
    • In analytical chemistry experiments, these stopcocks are used to control the flow of solutions during sample preparation or analysis.
  9. Quality Control Processes:
    • Stopcocks with needle valves 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.
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