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Related Experiment Videos

Computer controlled titration with piston burette or peristaltic pump - a comparison.

W Hoffmann1

  • 1Institut für Analytische Chemie, Technische Universität, D-01062, Dresden, Germany.

Analytical and Bioanalytical Chemistry
|September 1, 1996
PubMed
Summary

Piston burettes and peristaltic pumps offer distinct advantages in automatic titrations. Piston burettes excel in high-precision and slow titrations, while peristaltic pumps are better suited for continuous, long-term operations.

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Area of Science:

  • Analytical Chemistry
  • Chemical Instrumentation

Background:

  • Automatic titrations require precise titrant delivery.
  • Piston burettes and peristaltic pumps are common dosing devices.

Purpose of the Study:

  • To compare the performance of piston burettes and peristaltic pumps in automatic titrations.
  • To evaluate the impact of potentiometric and conductometric sensors on titration results.

Main Methods:

  • Comparative analysis of piston burettes and peristaltic pumps.
  • Acid-base titrations under controlled conditions.
  • Evaluation of potentiometric (glass electrode) and conductometric sensors.

Main Results:

  • Both dosing devices showed good agreement and reproducibility in acid-base titrations.

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  • Potentiometric sensor equilibration significantly influenced results; conductometric sensors offered faster detection.
  • Piston burettes are ideal for high-precision, organic solvent, and slow titrations.
  • Peristaltic pumps are suitable for continuous and long-term, low-maintenance titrations.

    • Conclusions:

    • The choice of dosing device depends on specific titration requirements.
    • Sensor selection impacts titration speed and accuracy.
    • Piston burettes and peristaltic pumps are viable options for automatic titrations with distinct application niches.