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Welcome to Rheology Central of Fluid Dynamics.  We are a rheology testing laboratory celebrating our 27th anniversary.

The chart below compares the steady steady viscosity at low shear rate of eight OTC topical lotions, creams and ointments.

If you need rheology or viscosity testing of your raw materials or products, we have the tools and laboratory resources to give you dependable and reliable results.  The chart below is an example of a frequency sweep for a water soluble polymer rheology modifier at 10 radians/s and room temperature.

We can help you select test conditions and test methods best suited for your particular needs. 

Our practical experience includes various pharmaceutical ointments, lotions and creams, foods, and other materials that range from low viscosity fluids to soft solids.

Foods are very difficult and interesting materials for testing.  Each class of foods represents a set of experimental challenges, as shown below with the dessert crepe.  The filling has a specific set of requirements for consumer acceptability as do the toppings.