ASTM E2589-23a PDF

Overview

ASTM E2589-23a: Standard Terminology Relating to Nonsieving Methods of Powder Characterization is a key international standard developed by ASTM International. This standard defines essential terminology for the analysis and description of particulate materials by nonsieving methods. As nonsieving powder characterization is widely applied in industries such as pharmaceuticals, materials science, chemicals, and manufacturing, standardizing language is critical for consistent interpretation of data across different laboratories, equipment, and methods.

The standard is maintained by ASTM Committee E29 on Particle and Spray Characterization, and it aligns with international best practices set forth by the World Trade Organization (WTO) Technical Barriers to Trade (TBT) Committee.

Key Topics

ASTM E2589-23a covers a broad range of terms and concepts related to nonsieving particle size analysis and measurement techniques, emphasizing:

• Definitions of Key Terms: Clear, precise definitions for common and specialized terms in powder characterization, such as particle size, particle size distribution, mean and median particle size, cumulative distribution, mode, roundness, and sphericity.
• Methods and Technologies: Terminology surrounding analytical methods which do not use sieves, including dynamic image analysis, static light scattering, sedimentation analysis, and electrical sensing zone analysis.
• Descriptive Formats and Calculations: Terms defining data reduction, analysis formats, as well as specific measurements like Feret diameter, equivalent diameter, and others.
• Image Analysis: Definitions specific to digital image analysis, such as area, aspect ratio, binarization, binary object, and perimeter.
• Powder and Particle Attributes: Terms describing physical characteristics like dispersion, emulsion, porosity, open pore, blind pore, and primary particle.

These well-established definitions reduce ambiguity and enhance inter-laboratory, inter-instrument, and intra-organization data comparisons.

Applications

The precise terminology of ASTM E2589-23a provides practical value across multiple industries and research fields, including:

• Pharmaceuticals: For quality control and regulatory compliance, understanding particle size and distribution affects drug dissolution rates, bioavailability, and stability.
• Materials Science: Accurate powder analysis is essential in ceramics, metallurgy, additive manufacturing, and composites, where powder characteristics influence final product performance.
• Chemicals and Catalysts: Particle size and surface area directly impact reactivity and process efficiency.
• Industrial Manufacturing: Ensures uniformity and repeatability in products where powders or dispersions are key components.
• Academic Research: Supplies a common scientific language, facilitating publication, collaboration, and peer review.

Adopting ASTM E2589-23a terminology avoids misunderstandings, supports method validation, and enables coherent reporting, especially when different nonsieving methods yield slightly different results.

Related Standards

ASTM E2589-23a is part of a larger body of standards on particle characterization. Key related standards include:

• ASTM E2578 - Practice for Calculation of Mean Sizes/Diameters and Standard Deviations of Particle Size Distributions.
• Other ASTM E29 Standards - Cover procedures and best practices in particle and spray characterization.

These standards are available through ASTM International and are regularly reviewed and updated. Users are encouraged to combine ASTM E2589-23a with related standards for a comprehensive approach to powder characterization.

Keywords: nonsieving methods, powder characterization, particle size, particle analysis, image analysis, ASTM E2589, powder measurement, surface area, ASTM International, particle measurement.