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Mineral oil viscosity measurement
+ 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 viscosity measurement for mineral oils
Mineral oil viscosity measurement plays a critical role in evaluating lubricant performance, equipment protection and product quality. Since viscosity directly influences lubrication efficiency, heat transfer and mechanical wear, precise laboratory measurements are essential throughout production and quality assurance.
Depending on the application and testing standard, mineral oils may be analysed using either kinematic or dynamic viscosity measurement techniques.
Kinematic viscosity measurement
Kinematic viscosity is commonly determined using calibrated glass capillary viscometers operating under precisely controlled temperature conditions. Fungilab supplies complete kinematic viscosity solutions, including:
Dynamic viscosity measurement
For applications requiring dynamic viscosity determination, Fungilab manufactures professional rotational viscometers, including the Viscolead Series and the V-Series.
Importance of temperature control
Viscosity is highly sensitive to temperature, making precise thermal regulation essential for obtaining accurate and repeatable results. Fungilab provides heating circulators and refrigerated circulators for laboratory temperature control across a wide operating range.
Applications
- Lubricating oils.
- Hydraulic oils.
- Transformer oils.
- Industrial mineral oils.
- Petroleum products.
- Quality control laboratories.
- Research and development.
Instrument verification
Routine verification using certified viscosity standard oils allows laboratories to maintain traceable measurements and verify instrument performance in accordance with laboratory quality systems.
Benefits of accurate viscosity measurement
- Reliable product quality control.
- Compliance with laboratory standards.
- Improved production consistency.
- Higher measurement repeatability.
- Long-term instrument traceability.
- Support for lubricant performance evaluation.
Frequently asked questions about the Viscolead ADV
Why is mineral oil viscosity measurement important?
Viscosity directly affects lubrication performance, equipment protection and product quality, making it one of the most important laboratory tests for mineral oils.
Which viscosity measurement method is commonly used for mineral oils?
Kinematic viscosity measurement using capillary viscometers is widely used, although dynamic viscosity measurements may also be required depending on the application.
Which Fungilab instruments are suitable for mineral oil testing?
Fungilab offers THERMOCAP precision baths, capillary viscometers and professional rotational viscometers for comprehensive mineral oil viscosity analysis.
Why is temperature control necessary?
Since viscosity changes significantly with temperature, precise thermal control is essential for obtaining accurate and repeatable laboratory results.
Which industries perform mineral oil viscosity measurements?
Petroleum, lubricant, automotive, power generation, chemical and industrial laboratories routinely perform mineral oil viscosity testing.
Can rotational viscometers measure mineral oils?
Yes. Rotational viscometers can determine the dynamic viscosity of mineral oils when required by the testing procedure.
How is instrument accuracy verified?
Routine verification using certified viscosity standard oils ensures reliable, repeatable and traceable viscosity measurements.
What are the benefits of accurate viscosity measurement?
Accurate viscosity measurements improve product consistency, support regulatory compliance, optimise quality control and help evaluate lubricant performance.
