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ASTM C690-03

Historical Revision

Standard Test Method for Particle Size Distribution of Alumina or Quartz Powders by Electrical Sensing Zone Technique

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1.1 This test method, one of several found valuable for the measurement of particle size, covers the determination of the particle size distribution of alumina or quartz powders (0.6 to 56.0 m) using electrical sensing zone particle size analyzers. These instruments use an electric current path of small dimensions which is modulated by individual particle passage through an aperture, and produces individual pulses of amplitude proportional to the particle volume.

1.2 The values stated in SI units are to be regarded as the standard.

1.3 This standard does not purport to address all of the safety problems, 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.


This test method is useful to both sellers and purchasers of alumina and quartz powders for determining particle size distributions for materials specifications, manufacturing control, and development and research.

SDO ASTM: ASTM International
Document Number C690
Publication Date Oct. 1, 2003
Language en - English
Page Count 4
Revision Level 03
Supercedes
Committee C21.04
Publish Date Document Id Type View
Feb. 15, 2009 C0690-09 Revision
Oct. 1, 2003 C0690-03 Revision
Jan. 1, 1997 C0690-86R97E01 Revision
Feb. 1, 2024 C0690-09R24 Reaffirmation
Oct. 1, 2019 C0690-09R19 Reaffirmation
Dec. 1, 2014 C0690-09R14 Reaffirmation