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4390-ASTM, CLASS B BURETTE, STRAIGHT BORE NEEDLE VALVE KEY STOPCOCK

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4390-ASTM, CLASS B BURETTE, STRAIGHT BORE NEEDLE VALVE KEY STOPCOCK

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  • These Burettes are suitable for use in schools and institutional laboratories not requiring the accuracy of CLASS-A.
  • Supplied with NEEDLE VALVE KEY STOPCOCK.
  • Scale is durable with ceramic enamel.
PART  No. Capacity (ml) Subdivision      (ml) ±Tol. (ml) Approx. Length                (mm) Pack Qty.
4390-10 10 0.05 0.04 540 12
4390-25 25 0.10 0.06 614 12
4390-50 50 0.10 0.10 745 12

Here are potential uses for a Class B burette with a straight bore needle valve key stopcock:

    1. Titration Procedures:
      • Burettes with a needle valve key stopcock are well-suited for titration experiments where precise control over the flow of titrant is essential. The needle valve allows for fine adjustments, facilitating accurate endpoint determination.
    2. Analytical Chemistry:
      • Class B burettes are commonly used for general analytical work where a moderate level of accuracy is acceptable. The needle valve stopcock provides more controlled and gradual dispensing of the titrant.
    3. Quantitative Analysis:
      • Laboratories performing quantitative analyses, such as determining the concentration of substances in solutions, can benefit from the accuracy provided by Class B burettes with needle valve key stopcocks.
    4. Quality Control Checks:
      • Class B burettes with a needle valve key stopcock can be employed for routine quality control checks in industries where moderate precision is sufficient for the application.
    5. Standardization of Solutions:
      • Burettes with needle valve key stopcocks are suitable for the preparation and standardization of solutions, providing precise control over the volume dispensed.
    6. Education and Training:
      • These burettes are used in educational laboratories for teaching titration techniques and volumetric measurements, offering students practical experience with controlled dispensing.
    7. Routine Laboratory Procedures:
      • Class B burettes with a needle valve key stopcock may find use in routine laboratory procedures where the convenience of a needle valve enhances the control over the dispensing of reagents.
    8. Non-Critical Research Applications:
      • In research settings where a moderate level of accuracy is acceptable, Class B burettes with a straight bore needle valve key stopcock can be used for dispensing and measuring volumes.
    9. Chemical Compatibility:
      • The needle valve stopcock is often made of materials like PTFE, providing chemical resistance and compatibility with a variety of reagents and solutions.
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