ASTM D 4438 : 2013
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Method for Particle Size Distribution of Catalysts and Catalyst Carriers by Electronic Counting
Hardcopy , PDF
27-03-2024
English
01-12-2013
Important note : All end users must be registered with an Account prior to user licenses being assigned.CONTAINED IN VOL. 05.06, 2018 Determines 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.
| Committee |
D 32
|
| DocumentType |
Test Method
|
| Pages |
3
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
1.1This 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.
1.2The range of particle sizes investigated was 20 to 150 μm (see IEEE/ASTM SI 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.
1.3This 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.
| I.S. EN ISO 12086-2:2006 | PLASTICS - FLUOROPOLYMER DISPERSIONS AND MOULDING AND EXTRUSION MATERIALS - PART 2: PREPARATION OF TEST SPECIMENS AND DETERMINATION OF PROPERTIES |
| BS EN ISO 12086-2:2006 | Plastics. Fluoropolymer dispersions and moulding and extrusion materials Preparation of test specimens and determination of properties |
| UNI EN ISO 12086-2 : 2006 | PLASTICS - FLUOROPOLYMER DISPERSIONS AND MOULDING AND EXTRUSION MATERIALS - PART 2: PREPARATION OF TEST SPECIMENS AND DETERMINATION OF PROPERTIES |
| ISO 12086-2:2006 | Plastics Fluoropolymer dispersions and moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties |
| 04/30091870 DC : DRAFT FEB 2004 | BS EN ISO 12086-2 - PLASTICS - FLUOROPOLYMER DISPERSIONS AND MOULDING AND EXTRUSION MATERIALS - PART 2: PREPARATION OF TEST SPECIMENS AND DETERMINATION OF PROPERTIES |
| DIN EN ISO 12086-2:2006-05 | PLASTICS - FLUOROPOLYMER DISPERSIONS AND MOULDING AND EXTRUSION MATERIALS - PART 2: PREPARATION OF TEST SPECIMENS AND DETERMINATION OF PROPERTIES |
| ASTM E 177 : 2014 : REDLINE | Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods |
| IEEE/ASTM SI_10-2010 | American National Standard for Metric Practice |
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