ASTM E2490
Standard Guide for Measurement of Particle Size Distribution of Nanomaterials in Suspension by Photon Correlation Spectroscopy (PCS)
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About This Item
ASTM E2490 is the Standard Guide for Measurement of Particle Size Distribution of Nanomaterials in Suspension by Photon Correlation Spectroscopy (PCS). It provides a technical framework for evaluating how particle sizes are measured in suspended nanomaterials using PCS, helping users approach results in a more consistent and informed way. For laboratories, manufacturers, and researchers working with nanoscale dispersions, this standard supports clearer interpretation, better comparability, and more dependable quality decisions.
Purpose of ASTM E2490
The purpose of ASTM E2490 is to guide the measurement of particle size distribution for nanomaterials in suspension by photon correlation spectroscopy. As a standards document, it helps define a common technical basis for using PCS in this application, which is especially important when working with very small particles in liquid media. The guide is intended to support more consistent test practice, data interpretation, and reporting so that particle sizing results are more useful for engineering and product evaluation.
Common use cases of ASTM E2490
This standard is commonly used in laboratories and technical workflows that measure nanosuspensions, dispersions, or other suspended nanomaterial systems. It is relevant when particle size distribution data are needed for development, characterization, comparison, or routine quality control. ASTM E2490 may also be helpful in procurement and product review settings where a recognized guide is needed to support measurement consistency and communication between suppliers, test labs, and end users.
Why ASTM E2490 matters
ASTM E2490 matters because particle size distribution can strongly influence the behavior and performance of nanomaterials in suspension. Using a recognized ASTM standard helps reduce ambiguity in how PCS measurements are approached and discussed, which can improve consistency across testing programs. That is valuable for compliance efforts, quality control, and product evaluation, especially when measurement results are used to compare batches, assess material stability, or support technical decisions.
- Photon correlation spectroscopy guidance
- Nanomaterials in suspension
- Particle size distribution measurement
- Support for consistent reporting
- Useful for QC and evaluation
- Publication Date: 2021-02-04
- Publisher: ASTM
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