PRODUCTS
Dynamic viscosity
Our products
Master Series
Superior, premium performance.
Price range: medium.
With high performance technology, an enhanced digital interface and a distinguished modern design, our rotational viscometer Master series instruments have completely reinvented and transformed the capabilities of testing equipment.
Featuring a redesigned, full touch keypad and outfitted with the latest Bluetooth and WI-Fi technology.
Master series viscometers are ideal for users requiring maximum functionality and easy customization. An enriched USB interface offers users an improved mode of accessibility that can only be offered by the Master series.
Models:
SMART SERIES
Accurate, fast and technology advanced rotational viscometer with capacity touch keypads, graphic displays for faster access to menus and results, and USB connector to keep all data recorded. Indispensable in QC and R&D laboratories.
EVO EXPERT
Latest technology for viscosity measurement. New performance and features such as: WiFi connectivity, USB port, TFT screen and multifunctional options to upgrade your viscosity research to the highest level. EVO Expert series offers a unique and wide range of rheological applications.
SMART SERIES
EVO EXPERT
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.
