ASTM D4438-13
Standard Test Method for Particle Size Distribution of Catalysts and Catalyst Carriers by Electronic Counting
- Standard No.
- ASTM D4438-13
- Release Date
- 2013
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D4438-13(2018)e1
- Latest
- ASTM D4438-24
- Scope
4.1 This test method can be used to determine particle size distributions for material specifications, manufacturing control, and research and development work in the particle size range usually encountered in fluidizable cracking catalysts.
1.1 This test method covers the determination of particle size distribution of catalyst and catalyst carrier particles using an electroconductive sensing method and is one of several valuable methods for the measurement of particle size.
1.2 The range of particle sizes investigated was 20 to 150 μm (see IEEE/ASTM8201;SI8201;10) equivalent spherical diameter. The technique is capable of measuring particles above and below this range. The instrument used for this method is an electric current path of small dimensions that is modulated by individual particle passage through an aperture, and produces individual pulses of amplitude proportional to the particle volume.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ASTM D4438-13 Referenced Document
- ASTM D1193 Standard Specification for Reagent Water
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- IEEE/ASTM SI 10 American National Standard for Metric Practice
ASTM D4438-13 history
- 2024 ASTM D4438-24 Standard Test Method for Particle Size Distribution of Catalysts and Catalyst Carriers by Electronic Counting
- 2018 ASTM D4438-13(2018)e1 Standard Test Method for Particle Size Distribution of Catalysts and Catalyst Carriers by Electronic Counting
- 2013 ASTM D4438-13 Standard Test Method for Particle Size Distribution of Catalysts and Catalyst Carriers by Electronic Counting
- 1985 ASTM D4438-85(2007) Standard Test Method for Particle Size Distribution of Catalytic Material by Electronic Counting
- 1985 ASTM D4438-85(2001)e1 Standard Test Method for Particle Size Distribution of Catalytic Material by Electronic Counting
- 1985 ASTM D4438-85(1997) Standard Test Method for Particle Size Distribution of Catalytic Material by Electronic Counting
