Knowing the viscosity of any fluid you are trying to pump is key. As viscosity tends to change with temperature for most fluids, being able to accurately calculate viscosity across a range of operating temperatures is vital in determining if a pump can even handle a viscous fluid at lower start-up temperatures.
Measured in centistokes (cSt) in honor of George Stokes, water at 20°C is used as a reference and has a base value of 1 cSt. To calculate your operating viscosity using our calculator, you’ll need viscosity vs. temperature properties for your fluid along with your operational temperatures.
Operating Viscosity
Viscosity at Temperature
(cSt)
Learning Center

Duratherm Recommended Sampling Procedures and Intervals
Duratherm fluids are engineered to have a long service life ... Read more

Proper Fluid Maintenance and Change-Out Procedures
With literally thousands of uses for heat transfer fluids, it ... Read more

Preparation and Startup of New Systems
This document is offered as a general guideline to starting ... Read more
What’s the Difference Between a Flush and a System Cleaner?
We’re often asked for a flushing fluid when what’s really
Fluid Maintenance: Large Systems
Routine fluid analysis is an essential maintenance tool for any
System Cleaners: Which One is Right for You?
Ideally you never need to clean your heat transfer system