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Technical note: an improved McCutchen miniviscometer for connective tissue fluids.

J J Evangelista, W H Davis, S L Lee

Connective Tissue Research

|January 1, 1978

Summary

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This study enhances McCutchen

Area of Science:

Rheology
Biomedical Engineering
Materials Science

Background:

The McCutchen's miniviscometer is a Couette-type instrument for fluid viscosity measurement.
Original limitations included restricted temperature control and limited shear rate range.

Purpose of the Study:

To improve the McCutchen's miniviscometer's capabilities.
Enhance temperature control, expand measurable viscosity range, and broaden shear rate applicability.

Main Methods:

Modification of the original McCutchen's miniviscometer.
Implementation of precise temperature control (±0.2°C).
Expansion of the shear rate range to 20–1500 sec⁻¹.

Main Results:

Achieved precise temperature control (±0.2°C).

Related Experiment Videos

Increased maximum measurable viscosity to 3000 centipoise at low shear rates (20 sec⁻¹).

Expanded usable shear rates to 20–1500 sec⁻¹ with reproducible data (±1.2% S.D.).

Conclusions:

The modified miniviscometer offers enhanced precision and a wider operational range.
The improved instrument is suitable for accurate viscosity measurements of small fluid volumes.
The device's ruggedness and reproducibility make it valuable for various fluid testing applications.