ASTM F660 - 83(2019) - Standard Practice for Comparing Particle Size in the Use of Alternative Types of Particle Counters

ASTM F660 - 83(2019)

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

Status : Current   Published : November 2019

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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 different measuring principles.

1.2 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.

1.3 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.

1.4 Three kinds of automatic particle counters are considered:

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

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

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

1.5 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.

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

1.7  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.

1.8  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.




Standard NumberASTM F660 - 83(2019)
TitleStandard Practice for Comparing Particle Size in the Use of Alternative Types of Particle Counters
StatusCurrent
Publication Date01 November 2019
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors particle counters, Strokes diameter
ICS19.120
PublisherASTM
FormatA4
DeliveryYes
Pages7
File Size165 KB
Price£40.00


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