Supporting R&D to Manufacturing. 

Applying the appropriate science,

to answer the questions, 

to drive the projects to meet the business needs.


Yield Stress


Other Assays


Knowing your sample viscosity may be important; however, understanding its more detailed rheological profile and potential implications may be highly value added and critical.

Rheology Testing Services (RTS) offers an array of analyses to support early R&D through manufacturing across many materials and industries.  These assays efficiently and precisely probe material response to various forces and conditions to model processes and applications to which your material may be exposed.  Material that is exposed to force, however minimal - even gravity, may reversibly or even irreversibly change from the effects of stress, shear, strain and temperature.  Output from these assays, described in more detail in the above tabs may provide better understanding of your materials to support R&D, process optimization, manufacturing, packaging, performance, efficacy, and tactile properties.  Other applications include regulatory considerations to demonstrate or disprove structural equivalence (Q3, ref 1-3), in-process control, batch consistency and stability.


1. "Draft Guideline on Quality and Equivalence of Topical Products" European Medicines Agency (18Oct2018) 


2. "Generic Development of Topical Dermatologic Products: Formulation Development, Process Development, and Testing of Topical Dermatological Products"        AAPS J. 2013 Jan; 15(1): 41-52 (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3535108/)


3.  "Testing Topicals: Analytical Strategies for the In-Vitro Demonstration of Bioequivalence" Pharm Tech Sept 2018  

      (http://www.pharmtech.com/testing-topicals-analytical-strategies-vitro-demonstration-bioequivalence? pageID=1)

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Need rheology support but not sure which assays and parameters are appropriate? No problem! You've come to the right place!
RTS will closely partner with you to efficiently and effectively address your technical needs with flexibility and minimal bureaucracy.  

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"It is always a pleasure working with Dr. Patrick who brings years of experience and expertise in rheology to the table in providing such valuable insight to our materials and formulations. We are impressed with the rheological services Dr. Patrick offered especially for our complex transdermal and topical projects. He values communicating clearly with clients at all levels and goes extra miles to deliver truly practical and professional data package. We would highly recommend the Rheology Testing Services for any rheological testing needs."