Meeting the Need
Since 2017 RTS has provided a broad range of flexible rheological assay options.
Responsive, no bureaucracy, rapid turnaround including a detailed report with datafiles and follow-up discussions to ensure client satisfaction as outlined in the "Applications, Assays & Deliverables" tab above.
In addition to the assays listed in the "Basic Assays" tab above, many "1-off" options not listed are often performed to ensure tailored solutions for your specific needs.
Frequency Sweep
Frequency sweep generates a rheological "fingerprint” or spectrum. It is used to probe viscoelastic properties and changes across frequencies associated with movement. Measurables include stiffness (complex modulus, G*), solid nature (elastic or storage modulus, G'), liquid nature (viscous or loss modulus, G"), solid-liquid tendency (phase angle), complex viscosity, and tan delta (G"/G'). This assay is useful to probe polymer and biomolecular viscoelastic arrangements under various conditions.
About Rheology Testing Services
Knowing your sample viscosity may be important; however, understanding its more detailed rheological profile and potential implications may be highly value added and critical.
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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)
(https://www.ema.europa.eu/en/quality-equivalence-topical-products#current-version-section)
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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)
Need rheology support?
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, rapid turn-around and minimal bureaucracy.