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  • ASTM
    F660-83(2013) Standard Practice for Comparing Particle Size in the Use of Alternative Types of Particle Counters
    Edition: 2013
    $103.58
    Unlimited Users per year

Description of ASTM-F660 2013

ASTM F660 - 83(2013)

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

Active Standard ASTM F660 | Developed by Subcommittee: D19.07

Book of Standards Volume: 11.01




ASTM F660

Significance and Use

4.1 This practice supports test methods designed to evaluate the performance of fluid-filter media, for example, Practice F796 wherein particle size distributions are addressed and at the same time this practice provides a means to compare size measurements obtained from several different types of instruments.

4.2 The factor for converting one kind of diameter scale to another is only valid for the specific test particles studied.

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 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 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.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

F661 Practice for Particle Count and Size Distribution Measurement in Batch Samples for Filter Evaluation Using an Optical Particle Counter (Discontinued 2000)

F662 Test Method for Measurement of Particle Count and Size Distribution in Batch Samples for Filter Evaluation Using an Electrical Resistance Particle Counter (Discontinued 2002)

F796 Practice for Determining The Performance of a Filter Medium Employing a Single-Pass, Constant-Pressure, Liquid Test


Keywords

particle counters; Strokes diameter;


ICS Code

ICS Number Code 19.120 (Particle size analysis. Sieving)


DOI: 10.1520/F0660-83R13

ASTM International is a member of CrossRef.

ASTM F660

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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