• Material: Borosilicate glass 3.3
• Chemical Resistant
• Rota flow

Here are some common uses for stopcocks with needle valves in a right-angle 90° design with a High Precision (HP) designation:

1. Titration Experiments:
   • Burettes or other glassware equipped with needle valve stopcocks in a right-angle 90° 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 right-angle 90° HP design are employed in chemical synthesis processes where controlled addition of a reagent is required with an exceptional level of accuracy, especially in setups requiring a right-angle connection.
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, including those requiring right-angle connections.
5. Research Applications:
   • High-precision stopcocks with a right-angle 90° design are used in various research applications where the utmost precision in volumetric measurements is required for experimentation, particularly in setups where a right-angle connection is advantageous.
6. Calibration Procedures:
   • These stopcocks are employed in the calibration of laboratory equipment, ensuring that volumetric measurements are extremely accurate and reliable, even in systems requiring right-angle connections.
7. Microscale Chemistry:
   • In microscale chemistry experiments where small quantities of reagents are used, the high precision of the needle valve design, combined with the right-angle configuration, is crucial for accurate control.
8. Standardization of Solutions:
   • High-precision needle valve stopcocks with a right-angle 90° configuration are utilized in the standardization of solutions, ensuring an exceptionally accurate determination of the concentration of a solution, particularly in systems requiring a right-angle connection.
9. pH Titration:
   • In pH titrations, where the endpoint is determined by a change in pH, needle valve stopcocks with high precision and a right-angle 90° design play a critical role in achieving extremely accurate and reliable results.
10. Educational Laboratories:
    • High-precision needle valve stopcocks with a right-angle 90° configuration are used in advanced educational laboratories for teaching advanced titration techniques and principles of volumetric analysis.