ASTM E3070
Standard Test Method for Shear Thinning Index of Non-Newtonian Liquids Using a Rotational Viscometer
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About This Item
ASTM E3070 defines a test method for measuring the shear thinning index of non-Newtonian liquids using a rotational viscometer. This standard helps users evaluate how a liquid’s viscosity changes under different shear conditions, which is important for product consistency, process control, and comparison between materials. For laboratories and manufacturers working with complex liquids, ASTM E3070 provides a structured approach to generating repeatable rheological data.
What is ASTM E3070?
ASTM E3070 is a standard test method focused on determining the shear thinning index of non-Newtonian liquids with a rotational viscometer. Its purpose is to support consistent measurement of flow behavior when a liquid does not maintain a constant viscosity. The standard is relevant where controlled viscosity testing is needed to characterize a material’s response to shear. As an ASTM standard, it gives users a common technical framework for testing and reporting results in a reliable way.
Where is ASTM E3070 used?
This standard is commonly used in laboratory and quality control settings where non-Newtonian liquids must be evaluated with a rotational viscometer. It is relevant for materials that show shear-dependent flow behavior, especially when comparing batches, monitoring formulation changes, or checking process performance. ASTM E3070 is also useful in product development and technical evaluation workflows where consistent rheological measurements support better decision-making and documentation.
Why is ASTM E3070 important?
ASTM E3070 matters because shear thinning behavior can affect how a liquid is processed, handled, and applied. A standardized test method helps reduce variation between measurements and improves confidence in reported results. That is valuable for compliance, procurement, and quality control when consistent performance data is needed. By using a recognized ASTM standard, organizations can better support product evaluation and reduce risk in testing and specification work.
- Shear thinning index measurement
- Rotational viscometer testing
- Non-Newtonian liquid evaluation
- Consistent laboratory reporting
- Quality control and product comparison
- Publication Date: 2022-02-25
- Publisher: ASTM
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