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Updated: Jun 28, 2026
04:46
The Quantification of Injectability by Mechanical Testing
Published on: May 13, 2020
Determination of viscosity with an open-closed flow-injection system
A Rios1, M D De Castro, M Valcarcel
1Department of Analytical Chemistry, Faculty of Sciences, University of Córdoba, Córdoba, Spain.
Talanta
|November 1, 1987
Summary
This study introduces a new flow-injection method for measuring the viscosity of water-miscible samples. The technique accurately determines viscosity in the 1-28 centipoise range using a dye plug
Area of Science:
- Analytical Chemistry
- Physical Chemistry
- Fluid Dynamics
Background:
- Accurate viscosity determination is crucial for characterizing fluid properties.
- Traditional methods for water-miscible samples can be complex or time-consuming.
- Developing rapid and precise viscosity measurement techniques is an ongoing need.
Purpose of the Study:
- To propose a novel flow-injection analysis (FIA) configuration for viscosity determination.
- To investigate the use of a dye plug's behavior in an open-closed system for viscosity measurement.
- To establish a reliable method for quantifying the viscosity of water-miscible samples.
Main Methods:
- Implementation of an open-closed flow-injection system.
- Utilizing a trapped sample (carrier) and injecting a dye plug.
- Photometric monitoring of the dye plug's behavior using an integrated detector.
- Relating parameters of the multipeak recording to sample viscosity.
Main Results:
- The proposed method successfully determines viscosity in the range of 1-28 centipoise (cp).
- The method achieves a high level of precision with a relative standard deviation (r.s.d.) of approximately +/- 1%.
- The behavior of the dye plug in the flow system is directly correlated with the sample's viscosity.
Conclusions:
- The developed flow-injection configuration offers an effective approach for viscosity measurement of water-miscible fluids.
- The method provides accurate and reproducible viscosity data within the specified range.
- This technique presents a valuable tool for fluid characterization in various scientific and industrial applications.
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