ASTM F51-00(2007)

Standard Test Method for Sizing and Counting Particulate Contaminant In and On Clean Room Garments

SIGNIFICANCE AND USE
The test method for particulate sizing and numbers on garments is nondestructive and may be used to evaluate the contamination levels of fibers and particles on and in clean room garments. The test may be used for evaluating the cleanliness levels of new or newly cleaned garments. It also may be used to evaluate the extent of fiber and particulate contamination on garments that have been worn, if necessary. For this application, it is necessary to sample representative areas of the garment fabric.
SCOPE
1.1 This test method covers the determination of detachable particulate contaminant 5 m or larger, in and on the fabric of clean room garments.
1.2 This test method does not apply to nonporous fabrics such as Tyvek or Gortex. It only applies to fabrics that are porous such as cotton or polyester.
1.3 The values stated in SI units are to be regarded as the standard. The inch-pound values given in parentheses are for information only.
1.4 This test method provides not only the traditional optical microscopic analysis but also a size distribution and surface obscuration analysis for particles on a fine-textured membrane filter or in a tape lift sample. It utilizes transmitted illumination to render all particles darker than the background for gray level detection. Particles collected on opaque plates must be transferred to a suitable membrane filter.
This standard may involve hazardous materials, operations, and equipment. 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.

General Information

• Status: Historical
• Publication Date: 31-Mar-2007
• ICS: 61.020 - Clothes
• Technical Committee: E21 - Space Simulation and Applications of Space Technology
• Drafting Committee: E21.05 - Contamination

Relations

• Replaces: ASTM F51-00(2002)e1 - Standard Test Method for Sizing and Counting Particulate Contaminant In and On Clean Room Garments
• Effective Date: 01-Apr-2007
• Replaced By: ASTM F51/F51M-00(2007)e1 - Standard Test Method for Sizing and Counting Particulate Contaminant In and On Clean Room Garments
• Effective Date: 01-Apr-2007
• Referred By: ASTM E2352-19 - Standard Practice for Aerospace Cleanrooms and Associated Controlled Environments—Cleanroom Operations
• Effective Date: 01-Apr-2007
• Referred By: ASTM E2312-11(2019) - Standard Practice for Tests of Cleanroom Materials
• Effective Date: 01-Apr-2007
• Referred By: ASTM E1549/E1549M-13(2022) - Standard Specification for ESD Controlled Garments Required in Cleanrooms and Controlled Environments for Spacecraft for Non-Hazardous and Hazardous Operations
• Effective Date: 01-Apr-2007

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F51 − 00(Reapproved 2007)
Standard Test Method for
Sizing and Counting Particulate Contaminant In and On
1
Clean Room Garments
ThisstandardisissuedunderthefixeddesignationF51;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.2 Institute of Environmental Sciences and Technology
3
(IEST) Document:
1.1 Thistestmethodcoversthedeterminationofdetachable
IEST-RP-CC003.2, Garment System Considerations for
particulate contaminant 5 µm or larger, in and on the fabric of
Cleanrooms and Other Controlled Environments
clean room garments.
1.2 This test method does not apply to nonporous fabrics
3. Terminology
such as Tyvek® or Gortex®. It only applies to fabrics that are
3.1 Definitions:
porous such as cotton or polyester.
3.1.1 fiber, n—particle longer than 100 µm and with a
1.3 The values stated in SI units are to be regarded as the
length-to-width ratio exceeding 10:1.
standard. The inch-pound values given in parentheses are for -6
3.1.2 micrometre (µm), n—SIunitoflengthwhichis10 of
information only.
a metre or approximately 0.00004 in.
1.4 Thistestmethodprovidesnotonlythetraditionaloptical
3.1.3 particle size (L) (µm)—majorprojecteddimensionofa
microscopic analysis but also a size distribution and surface
particle.
obscuration analysis for particles on a fine-textured membrane
filterorinatapeliftsample.Itutilizestransmittedillumination
4. Summary of Test Method
torenderallparticlesdarkerthanthebackgroundforgraylevel
2
4.1 Filtered air is drawn through five designated 0.01-m
detection. Particles collected on opaque plates must be trans-
2 2
(1.5-in. or approximately 0.01-ft ) areas of a single thickness
ferred to a suitable membrane filter.
of the garment fabric at a rate of 14 L/min (0.5 cfm) for a
1.5 This standard may involve hazardous materials,
period of 1 min for each area.
operations, and equipment. This standard does not purport to
4.2 The air drawn through the garment subsequently passes
address all of the safety concerns, if any, associated with its
through a membrane filter disk, impinging the entrained
use. It is the responsibility of the user of this standard to
particles upon the filter surface.
establish appropriate safety and health practices and deter-
4.3 The filter disk is then examined microscopically for
mine the applicability of regulatory limitations prior to use.
particles removed from the garment.
2. Referenced Documents
4.4 For particles larger than 5 µm, use optical analysis. For
2
2.1 ASTM Standards: particles smaller than 5 µm, use automated image analysis.
E1216Practice for Sampling for Particulate Contamination
4.5 Cleaning and counting techniques are in accordance
by Tape Lift
with those established in Section 10.
F25Test Method for Sizing and CountingAirborne Particu-
late Contamination in Cleanrooms and Other Dust-
5. Significance and Use
Controlled Areas
5.1 The test method for particulate sizing and numbers on
garments is nondestructive and may be used to evaluate the
contamination levels of fibers and particles on and in clean
1
This test method is under the jurisdiction ofASTM Committee E21 on Space
room garments. The test may be used for evaluating the
SimulationandApplicationsofSpaceTechnologyandisthedirectresponsibilityof
Subcommittee E21.05 on Contamination. cleanliness levels of new or newly cleaned garments. It also
Current edition approved April 1, 2007. Published April 2007. Originally
may be used to evaluate the extent of fiber and particulate
´1
approvedin1965.Lastpreviouseditionapprovedin2002asF51-00(2002) .DOI:
contamination on garments that have been worn, if necessary.
10.1520/F0051-00R07.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3
Standardsvolume information,referto thestandard’sDocumentSummary page on Available from IEST, 940 E. Northwest Highway, Mount Prospect, IL 60056.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F51 − 00 (2007)
For this application, it is necessary to sample representative
areas of the garment fabric.
6. Apparatus
4
6.1 Filter Assembly and Adapter , see Fig. 1and Fig. 2.
6.1.1 Filter Holder, aerosol open type having an effective
2
filter area of 960 6 25 mm .
6.2 Vacuum Pump or Aspirator, capable of operating at a
pressure of 7 kPa (500 torr) with a flow rate of 14 L/min (0.5
cfm).
4
6.3 Flowmeter or Orifice, calibratedandhavingacapacity
inexcessof14L/min(0.5cfm),oralimitingorificecalibrated
withthepump,filter
...