# Rheology > Evaluates material behavior during processing, storage, and use. Source: https://covalent.com/techniques/mechanical-testing/rheology/ Updated: 2026-04-23T00:02:06+00:00 --- ![](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/themes/covalent/assets/images/blog-default-banner.jpg) ![](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/themes/covalent/assets/images/blog-mobile-banner.jpg) [Core Lab](https://covalent.com/covalent-core-lab/) # Rheology Rheological analysis is essential for understanding how materials behave during processing, storage, and end-use across diverse industries. [Add to Quote](#) ## What Is Rheology? Rheology or Rheometry is the scientific study of how materials deform and flow under applied forces. It captures the interplay of viscosity (resistance to flow), elasticity (reversible deformation), and viscoelasticity (time-dependent behavior) in materials. Viscosity, one of the core parameters in rheology, is important for characterizing a material’s resistance to flow, which directly impacts processing methods such as pumping, mixing, spraying, and spreading in applications ranging from pharmaceuticals to coatings and food products. At Covalent Metrology, we have an Anton Paar MCR 302 rotational rheometer equipped with a peltier stage. Broad Material Compatibility ### Broad Material Compatibility Handles liquids, gels, pastes, and soft solids with versatile measurement modes. Precise Environmental Control ### Precise Environmental Control Offers –20°C to 200°C testing with evaporation blocker for volatile samples. Advanced Testing Flexibility ### Advanced Testing Flexibility Supports rotational, oscillatory, creep, stress relaxation, UV curing, and tribology studies. ## Why Use Rheology Testing? Rheological testing is valued for its versatility and precision in characterizing material behavior. Rheology enables quantitative analysis of flow and deformation under real-world conditions. Industries Served: - Pharmaceuticals. - Food and Beverage. - Batteries and Energy Storage. - Plastics and Polymers. - Adhesives and Sealants. - Biomedical and Cosmetics. - Oil and Gas. - Paints, Coatings, and Inks. - Environmental Science. ### Quantitative Flow and Deformation Analysis Measures viscosity, elasticity, and viscoelasticity to simulate real-world material behavior. ### Cross-Industry Applications Widely used in pharmaceuticals, food, polymers, batteries, coatings, and biomedical fields. ### Supports Product Development and QA Provides data to optimize processing, stability, and performance of complex materials. ## Covalent’s Capabilities Offer Rheology for Quantitative Viscoelastic Material Analysis [Get a Quote](https://covalent.com/get-a-quote/) ## Working Principle In a rheological test, the sample is placed between two geometries (e.g., cone-plate, parallel plate, or cup-and-bob), and a controlled shear stress or strain is applied. The instrument measures the resulting torque, displacement, and normal force to determine properties like viscosity, complex modulus, and damping behavior. This process helps simulate real-world conditions such as spreading, mixing, or flowing through a pipe. ### Equipment Used for Rheology: #### Anton Paar MCR 302 - Features: - Rotational rheometer with Peltier temperature control. - Geometries Supported: Cone-plate, parallel plate, cup-and-bob. - Optional setups: Tribology cell, UV cure. - Air-bearing-supported EC motor. - Available with flow, rotational, and oscillatory mode. - Torque Range (Rotation): 0.5 nNm to 200 mNm. - Torque Range (Oscillation): 7.5 nNm to 200 mNm. - Variable Temperature Range: 20°C to 200°C. [View Spec Sheet](https://www.anton-paar.com/us-en/products/details/modular-compact-rheometer/) ### Key Differentiators In a rheometry test, a sample is subject to shearing with preset speed, frequency and temperature conditions –which can be either static or dynamic. Strengths - Broad applicability across liquids, gels, and soft solids. - Precise temperature control from –20°C to 200°C. Limitations - Limited automation and throughput. - High operator dependency for complex samples. - Requires sufficient sample volume for reliable results. Two colleagues working together on a laptop, discussing a project in a bright, professional environment. ## Unsure whether Rheology is Right for You? Learn more about using Rheology testing services today. [Talk to an Expert](https://covalent.com/contact-us/) ## Sample Information Example Output Sample Requirements [https://covalent.com/wp-content/uploads/2025/12/rheometry-output.jpg](https://covalent.com/wp-content/uploads/2025/12/rheometry-output.jpg) Frequency sweep of silicone oil showing viscoelastic crossover point between storage modulus (G′) and loss modulus (G″). ### What we accept: - Liquid/Fluid Samples: Typically, several mL preferred. - Solid Samples: 25 mm or 50 mm diameter discs. - Semisolid (gel, paste, ointment) or fluid phase (solution, slurry, liquid). - Semisolid stiffness upper limit: up to a few decades of kPa. - Fluid material viscosity lower limit: down to 1 mPa·s (1 cps). ## Use Cases - Pharmaceuticals - Food & Beverages - Batteries & Energy Storage - Plastics & Polymers - Biomedical & Cosmetics - Oil & Gas - Paints / Coatings / Ink - Environmental Science - ![Pharmaceutical Industry](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2025/11/uc-pharmaceuticals-biomedical-devices.jpg) ### Pharmaceuticals Viscoelastic property analysis of gels and soft solids. - ![Food and Beverages](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2025/11/uc-food-and-beverage.jpg) ### Food & Beverages Thixotropy characterization. - ![Batteries & Energy Storage](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2025/11/uc-energy-storage.jpg) ### Batteries & Energy Storage DMA testing of polymer films and composites. - ![Plastics & Polymers](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2025/11/uc-polymers-coatings.jpg) ### [Plastics & Polymers](/applications/polymer-and-plastic-analysis-testing-services/) Curing studies of thermosets (e.g., epoxy resins). - ![Biomedical & Cosmetics](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2025/11/uc-biomedical-and-life-sciences.jpg) ### Biomedical & Cosmetics Tribological assessments. - ![Oil and Gas](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2025/11/uc-oil-petrochemical-refining.jpg) ### Oil & Gas Viscosity profiling of oils, greases, and emulsions. - ![Paints / Coatings / Ink](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2025/11/uc-coating-and-adhesion-optimization.jpg) ### [Paints / Coatings / Ink](/applications/coating-testing/) Determination of gel point. - ![Environmental Science](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2025/11/uc-environmental-applications.jpg) ### Environmental Science Flow curve development for slurries and dispersions. ## Complementary Techniques - **DSC (Differential Scanning Calorimetry):** For thermal transitions like Tg or melting; curing studies. - **FTIR (Fourier Transform Infrared Spectroscopy) and GC-MS (Gas Chromatography-Mass Spectrometry):** To identify volatile. components. - **TGA (Thermogravimetric Analysis):** For mass loss behavior. [Differential Scanning Calorimetry (DSC)](https://covalent.com/techniques/thermal-analysis/differential-scanning-calorimetry-dsc-services/) Quantifies heat flow for material optimization. [Explore](https://covalent.com/techniques/thermal-analysis/differential-scanning-calorimetry-dsc-services/) [Add to Quote](#) [Fourier Transform Infrared Spectroscopy (FTIR)](https://covalent.com/techniques/chemical-analysis/fourier-transformed-infrared-spectroscopy-ftir/) Rapid, non-destructive molecular fingerprinting across materials. [Explore](https://covalent.com/techniques/chemical-analysis/fourier-transformed-infrared-spectroscopy-ftir/) [Add to Quote](#) [Gas Chromatography-Mass Spectrometry (GC-MS)](https://covalent.com/techniques/chemical-analysis/gas-chromatography-mass-spectroscopy-gc-ms/) Identifies and quantifies small organic molecules in mixtures. [Explore](https://covalent.com/techniques/chemical-analysis/gas-chromatography-mass-spectroscopy-gc-ms/) [Add to Quote](#) [Thermogravimetric Analysis (TGA)](https://covalent.com/techniques/thermal-analysis/thermogravimetric-analysis-tga/) Measures material mass changes with temperature or time. [Explore](https://covalent.com/techniques/thermal-analysis/thermogravimetric-analysis-tga/) [Add to Quote](#) ## Why Choose Covalent for Your Rheology Needs? Covalent offers advanced rheological testing with high-performance instrumentation, wide temperature control range, and expert analytical support. ## Frequently Asked Questions Identifying the right text can be complex, but it doesn’t have to be complicated. Here are some questions we are frequently asked. - ### What types of samples can Covalent test with rheology? We test liquids, gels, soft solids, and polymers, including pharmaceutical creams, electrode slurries, adhesives, and food emulsions. - ### Can you perform oscillatory and steady shear tests? Yes, we can perform both oscillatory and steady shear tests. - ### What are your temperature capabilities? We can test from –20°C to 200°C (Peltier). - ### How fast can I get results? Turnaround time is typically 5 business days. Resources ![](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/themes/covalent/assets/images/resource-bg-c.svg) Resources ![](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/themes/covalent/assets/images/resource-bg-o.svg) [![Pressing Ahead: Unveiling Material Insights Through Dynamic Nanoindentation](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2024/08/dynamic-nanoindentation-768x505.png) Webinar Pressing Ahead: Unveiling Material Insights Through Dynamic Nanoindentation 60 mins Jul 18, 2024](https://covalent.com/webinars/pressing-ahead-unveiling-material-insights-through-dynamic-nanoindentation/) [![Metals Testing](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2025/06/Metals-Testing.svg) Application Metals Testing Jun 10, 2025](https://covalent.com/applications/metals-testing-and-failure-analysis-lab/) [![Mechanical Testing](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2025/06/Structural-Mechanical-Properties.svg) Application Mechanical Testing Jun 10, 2025](https://covalent.com/applications/mechanical-testing/) [![Introducing Nanoindentation ‘Sinus Mode’ for Dynamic Mechanical Analysis on Polymer Coatings](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/themes/covalent/assets/images/resource-thumbnail.jpg) Blog Introducing Nanoindentation ‘Sinus Mode’ for Dynamic Mechanical Analysis on Polymer Coatings 3 min read Jun 12, 2024](https://covalent.com/blog/introducing-nanoindentation-sinus-mode-for-thermomechanical-analysis-on-polymer-coatings/) [![Dynamic Mechanical Analysis of Polymer Coatings by Nanoindentation](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2024/06/Dynamic-Mechanical-Analysis-of-Polymer-Coatings-by-Nanoindentation.jpg) Application Note Dynamic Mechanical Analysis of Polymer Coatings by Nanoindentation Jun 05, 2024](https://covalent.com/resource-library/dynamic-mechanical-analysis-of-polymer-coatings-by-nanoindentation/) [![Thermal Solutions: Characterization of Epoxy Reinforced Glass by DSC and DMA](https://spcdn.shortpixel.ai/spio/ret_img,q_cdnize,to_auto,s_webp:avif/covalent.com/wp-content/uploads/2023/10/Thermal-Solutions-Characterization-of-Epoxy-Reinforced-Glass-by-DSC-and-DMA.jpg) Application Note Thermal Solutions: Characterization of Epoxy Reinforced Glass by DSC and DMA Jun 12, 2021](https://covalent.com/resource-library/thermal-solutions-characterization-of-epoxy-reinforced-glass-by-dsc-and-dma/) Need Expert Guidance? Our experts can help you determine if this approach is the best fit for your samples and discuss the next steps. [Talk to a Materials Scientist](https://covalent.com/contact-us/)