UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close

This is embarrasing..

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing..

An error occurred while processing the form. Please try again in a few minutes.

ASTM F660

Standard Practice for Comparing Particle Size in the Use of Alternative Types of Particle Counters

active, Most Current
Buy Now
Organization: ASTM
Publication Date: 28 January 1983
Status: active
Page Count: 7
ICS Code (Particle size analysis. Sieving): 19.120
scope:

This practice provides a procedure for comparing the sizes of nonspherical particles in a test sample determined with different types of automatic particle counters, which operate on different measuring principles.

A scale factor is obtained by which, in the examination of a given powder, the size scale of one instrument may be multiplied to agree with the size scale of another.

The practice considers rigid particles, free of fibers, of the kind used in studies of filtration, such as: commercially available test standards of quartz or alumina, or fly ash, or some powdered chemical reagent, such as iron oxide or calcium sulfate.

Three kinds of automatic particle counters are considered:

Image analyzers, which view stationary particles under the microscope and, in this practice, measure the longest end-to-end distance of an individual particle.

Optical counters, which measure the area of a shadow cast by a particle as it passes by a window; and

Electrical resistance counters, which measure the volume of a particle as it passes through an orifice in an electrically conductive liquid.

This practice also considers the use of instruments that provide sedimentation analyses, which is to say provide measures of the particle mass distribution as a function of Stokes diameter. The practice provides a way to convert mass distribution into number distribution so that the meaning of Stokes diameter can be related to the diameter measured by the instruments in 1.4.

The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Document History

ASTM F660
January 28, 1983
Standard Practice for Comparing Particle Size in the Use of Alternative Types of Particle Counters
This practice provides a procedure for comparing the sizes of nonspherical particles in a test sample determined with different types of automatic particle counters, which operate on different...
January 28, 1983
Standard Practice for Comparing Particle Size in the Use of Alternative Types of Particle Counters
This practice provides a procedure for comparing the sizes of nonspherical particles in a test sample determined with different types of automatic particle counters, which operate on different...
January 28, 1983
Standard Practice for Comparing Particle Size in the Use of Alternative Types of Particle Counters
This practice provides a procedure for comparing the sizes of nonspherical particles in a test sample determined with different types of automatic particle counters, which operate on different...
January 28, 1983
Standard Practice for Comparing Particle Size in the Use of Alternative Types of Particle Counters
This practice provides a procedure for comparing the sizes of nonspherical particles in a test sample determined with different types of automatic particle counters, which operate on different...
January 1, 1983
Standard Practice for Comparing Particle Size in the Use of Alternative Types of Particle Counters
1. Scope 1.1 This practice provides a procedure for comparing the sizes of nonspherical particles in a test sample determined with different types of automatic particle counters, which operate on...
Advertisement