ASTM F 312 : 2008

Name: ASTM F 312 : 2008
Brand: ASTM
Price: 110.51 AUD

Superseded

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Standard Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters

Available format(s)

Hardcopy , PDF

Superseded date

19-10-2023

Language(s)

English

Published date

01-11-2008

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 15.03, 2016 Specifies the determination of the size distribution and quantity of particulate matter contamination from aerospace fluids isolated on a membrane filter.

1.1 These test methods cover the determination of the size distribution and quantity of particulate matter contamination from aerospace fluids isolated on a membrane filter. The microscopical techniques described may also be applied to other properly prepared samples of small particles. Two test methods are described for sizing particles as follows:

1.1.1 Test Method A—Particle sizes are measured as the diameter of a circle whose area is equal to the projected area of the particle.

1.1.2 Test Method B—Particle sizes are measured by their longest dimension.

1.2 The test methods are intended for application to particle contamination determination of aerospace fluids, gases, surfaces, and environments.

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

1.4 These test methods do not provide for sizing particles smaller than 5 μm.

Note 1—Results of these methods are subject to variables inherent in any statistical method. The use of these methods as a standard for initially establishing limits should be avoided unless ample tolerances are permissible.

1.5 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.

Committee	E 21
DocumentType	Test Method
Pages	4
ProductNote	Reconfirmed 2008
PublisherName	American Society for Testing and Materials
Status	Superseded
SupersededBy	ASTM F 312 : 2008 : R2016
Supersedes	ASTM F 312 : 1997 : R2003 ASTM F 312 : 1997

MIL-DTL-197 Revision N:2022

Packaging of Bearings, Associated Parts and Subassemblies

ASTM F 318 : 2006	Standard Practice for Sampling Airborne Particulate Contamination in Cleanrooms for Handling Aerospace Fluids
ASTM F 314 : 1970 : R1980	Methods of Test for Identification of Metallic and Fibrous Contaminants in Aerospace Fluids (Withdrawn 1990)

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ASTM F 312 : 2008

Standard Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters

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