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Viscometer baths
+ infoDynamic viscosity measurement for laboratory and industrial applications
Dynamic viscosity measurement is essential for evaluating how liquids and semi-solid materials resist flow under applied force. Accurate viscosity data supports product development, quality control and process optimisation across a wide range of industries.
Fungilab provides complete dynamic viscosity measurement solutions based on precision rotational viscometers, temperature control systems and specialized accessories designed to deliver reliable, repeatable and traceable laboratory results.
Whether measuring low-viscosity liquids or highly viscous materials, Fungilab offers instruments adapted to routine laboratory testing as well as demanding research applications.
Our products
Viscolead Series
Viscolead ONE
Viscolead ADV
Accessories
LABORATORY DIVISION
Dynamic viscosity
Viscosity is part of the science of Rheology which quantifies the resistance materials give to changing shape.
Proper interpretation of viscosity data can reduce the rate of rejects while keeping production and formulation development costs to a minimum. Consistent product quality is ensured through proper viscosity measurements, either alone or in conjunction with compatible tests.
Dynamic viscosity testing can help with:
- Material characterization or “finger-printing”
- Standard testing methods to check for differences between batches
- Indirect way of measuring quality
- Product formulation
- Quality control
- Process control
- Design, optimization and operation of process equipment
Material characterization or “finger-printing”
Standard testing methods to check for differences between batches
Indirect way of measuring quality
Product formulation
Quality control
Process control
Design, optimization and operation of process equipment
Viscosity types
Dynamic viscosity
Centipoise (mPa*s)
Kinematic viscosity
Centistokes (mm2/sec)
Apparent viscosity
Centipoise (mPa*s)
Newton’s Law
According to Newton’s law, the viscosity of a fluid is constant. As shear rate changes, shear stress changes in proportion such that viscosity is constant. Common fluids that exhibit such behavior are:
Unfortunately for us, not all fluids follow Newton’s law. In fact, most fluids do not. For this reason, fluids are classified into two categories:
Rotational Viscometer
The viscosity is calculated from the measured torque and rotational speed, as well as the dimensions of the measuring geometry.
A fluid’s resistance to flow is measured by the torque it exerts on the rotating shaft of the viscometer.
Absolute viscosity: the measuring geometry fulfills certain requirements (which is the case of coaxial spindles).
Relative viscosity: the dimensions of the measuring geometry are not well defined.
Advantage
Flexibility in:
- Viscosity Range
- Temperature range
- Shear rate range
Application
For Newtonian and non-Newtonian substances and temperatures different from room temperature.
Professional viscometer baths for laboratory viscosity testing
Viscometer baths are indispensable laboratory instruments for viscosity determination because viscosity is highly dependent on temperature. Even small temperature variations can significantly influence measurement results, making precise thermal regulation essential for reliable testing.
Fungilab viscometer baths provide excellent temperature stability and uniformity, ensuring optimal conditions for capillary viscometers, falling-ball viscometers and other temperature-sensitive viscosity measurement techniques.
Applications of viscometer baths
- Kinematic viscosity measurements.
- Dynamic viscosity testing.
- Quality control laboratories.
- Research and development.
- Calibration laboratories.
- Petroleum product testing.
- Chemical analysis.
- Pharmaceutical laboratories.
Compatible viscosity measurement systems
Viscometer baths are commonly used together with capillary viscometers, including Ubbelohde and Cannon-Fenske models, providing the constant temperature required for accurate kinematic viscosity determination.
They are also suitable for use with the Viscoball, where stable temperature conditions are essential for precise falling-ball viscosity measurements.
Temperature stability and uniformity
High-quality viscometer baths provide exceptional temperature stability and homogeneous heat distribution throughout the bath, reducing measurement uncertainty and improving repeatability between tests.
Laboratory benefits
- Excellent temperature stability.
- Uniform heat distribution.
- Improved measurement repeatability.
- Suitable for long-duration viscosity testing.
- Reliable operation for quality control and research laboratories.
- Compatible with multiple viscosity measurement methods.
Complete viscosity measurement solutions
Fungilab complements its viscometer baths with a complete range of dynamic viscometers, precision capillary viscometers and certified viscosity standard oils, allowing laboratories to establish fully traceable viscosity testing procedures.
Frequently asked questions about the Viscolead ADV
What is a viscometer bath?
A viscometer bath is a temperature-controlled laboratory bath designed to maintain highly stable thermal conditions during viscosity measurements.
Why is temperature control important for viscosity measurements?
Viscosity changes with temperature, so maintaining a constant temperature is essential for obtaining accurate, repeatable and traceable measurement results.
Which instruments can be used with a viscometer bath?
Viscometer baths are commonly used with capillary viscometers, falling-ball viscometers and other laboratory instruments requiring precise temperature control.
Which laboratories use viscometer baths?
They are widely used in petroleum, pharmaceutical, chemical, research, calibration and industrial quality control laboratories.
What is the advantage of high temperature stability?
High temperature stability reduces measurement uncertainty and improves repeatability between viscosity tests.
Can viscometer baths be used for kinematic viscosity measurements?
Yes. They are an essential component of kinematic viscosity testing performed with capillary viscometers.
Are viscometer baths suitable for research laboratories?
Yes. Their precise thermal control makes them ideal for research, development and calibration applications where measurement accuracy is critical.
What are the main benefits of a viscometer bath?
Viscometer baths provide stable temperature control, improved repeatability, greater measurement accuracy and compatibility with multiple laboratory viscosity measurement techniques.
