Cleanliness StandardsCleanliness Standards
LASAIR II Operator’s ManualLASAIR II Operator’s Manual
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8-38-3
ISO 14644-1 StandardISO 14644-1 Standard
The document, ISO 14644-1 (1999-05-01), was used when designing the ISOThe document, ISO 14644-1 (1999-05-01), was used when designing the ISO
14644-1 module. Only the c14644-1 module. Only the classes specified in the document’s tables have beenlasses specified in the document’s tables have been
implemented; LASAIR II does not support intermediate class sizes orimplemented; LASAIR II does not support intermediate class sizes or
intermediate particle sizes.intermediate particle sizes.
Use the following sources for more information about ISO 14644-1:Use the following sources for more information about ISO 14644-1:
International Standards OrganizationInternational Standards Organization
Web Site: www.iso.chWeb Site: www.iso.ch
Institute of Environmental Sciences aInstitute of Environmental Sciences and Technologynd Technology
940 East Northwest Highway940 East Northwest Highway
Mount ProspectMount Prospect
Illinois, 60056Illinois, 60056
USAUSA
TTel: 0101 708 255 el: 0101 708 255 15611561
Fax: 0101 708 255 1699Fax: 0101 708 255 1699
e-mail: Publicationsales@iest.org or iest@iest.orge-mail: Publicationsales@iest.org or iest@iest.org
Web Site: www.iest.orgWeb Site: www.iest.org
Table 8-1: ISO 14644-1 Class StandardsTable 8-1: ISO 14644-1 Class Standards
Maximum Particles per MMaximum Particles per M
33
CCllaassss 00..11
µµ
0.20.2
µµ
0.30.3
µµ
0.50.5
µµ
1.01.0
µµ
5.05.0
µµ
ISO 1ISO 1
10 10 22
ISO 2ISO 2 110000 2244 1100 44
ISO 3ISO 3 11000000 223377 110022 3355 88
ISO 4ISO 4 1100000000 22337700 11002200 335522 8833
ISO 5ISO 5 110000000000 2233770000 1100220000 33552200 883322 2299
ISO 6ISO 6 11000000000000 223377000000 110022000000 3355220000 88332200 229933
ISO 7ISO 7 335522000000 8833220000 22993300
ISO 8ISO 8
33552200000000 883322000000 2299330000
ISO 9ISO 9
3355220000000000 88332200000000 229933000000
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