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Part no. Stopcock Size Bore Of Plug mm NS Diameter Of Plug At Centre mm Pack Qty.
1530-11 1 13.5 11 10
1530-11A 1 ½ 13.5 11 10
1530-11B 2 13.5 11 10
1530-15 3 18.2 15.2 10
1530-15A 4 18.2 15.2 10
1530-16 5 19.5 16 10
1530-16A 6 19.5 16 10
1530-24 8 28 24 10
1530-24 10 28 24 10


  1. Laboratory Glassware:
    • Stopcocks with a straight bore and PTFE plug only 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 Procedures:
    • In titration experiments, stopcocks with a straight bore and PTFE plug only 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, stopcocks are utilized to control the flow of carrier gases, samples, or other gases within the system.
  6. Fraction Collection:
    • Stopcocks with precise control are employed in fraction collection setups, allowing researchers to collect specific fractions during various processes, such as column chromatography or distillation.
  7. Vacuum Filtration:
    • The stopcock is used in vacuum filtration setups to control the flow of liquid through the filtration apparatus, facilitating the separation of solids from liquids.
  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 a straight bore and PTFE plug only 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 ASTM standards ensures that the stopcocks meet specific quality and safety criteria, contributing to the standardization of laboratory glassware.
  11. Educational Demonstrations:
    • Stopcocks with these specifications are used in educational settings to demonstrate principles of fluid control and precision in laboratory experiments.
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