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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.
1700-8 0-3 8 10
1700-10 0-6 10 10
1700-13 0-10 13 10

Here are some common uses for stopcocks with needle valves in a straight design with a High Precision (HP) designation:

  1. Titration Experiments:
    • Burettes or other glassware equipped with needle valve stopcocks in a straight HP configuration are used in titration experiments where the highest level of precision in titrant addition is required.
  2. Quantitative Analysis:
    • In analytical chemistry, particularly during quantitative analysis, these stopcocks are essential for delivering extremely precise volumes of titrant to determine the concentration of a substance in a solution.
  3. Chemical Synthesis:
    • Needle valve stopcocks with a straight HP design are employed in chemical synthesis processes where controlled addition of a reagent is required with an exceptional level of accuracy.
  4. Quality Control:
    • Industries, especially those requiring strict quality control, use stopcocks with high precision needle valves for accurate volume measurements in various analytical procedures.
  5. Research Applications:
    • High-precision stopcocks are used in various research applications where the utmost precision in volumetric measurements is required for experimentation.
  6. Calibration Procedures:
    • These stopcocks are employed in the calibration of laboratory equipment, ensuring that volumetric measurements are extremely accurate and reliable.
  7. Microscale Chemistry:
    • In microscale chemistry experiments where small quantities of reagents are used, the high precision of the needle valve design is crucial for accurate control.
  8. Standardization of Solutions:
    • High-precision needle valve stopcocks are utilized in the standardization of solutions, ensuring an exceptionally accurate determination of the concentration of a solution.
  9. pH Titration:
    • In pH titrations, where the endpoint is determined by a change in pH, needle valve stopcocks with high precision play a critical role in achieving extremely accurate and reliable results.
  10. Educational Laboratories:
    • High-precision needle valve stopcocks are used in advanced educational laboratories for teaching advanced titration techniques and principles of volumetric analysis.
  11. Trace Analysis:
    • Laboratories performing trace analysis use high-precision stopcocks to achieve the highest level of precision in measuring small volumes of titrant.
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