Cleanroom Classifications

Experienced: expert modular cleanroom design,  manufacturing,  installation and certification since 1976. More than 500 cleanrooms built.

Quality construction: We manufacture all our components in house. Installation is done by our factory team on-site.

Satisfied customers: Read why customers chose American Cleanroom Systems and why they come back.

Customer Testimonials

We have had 6 FDA audits this year. Two of them surprise. They always attack the cleanroom but it always passes with flying colors. Our cleanrooms are robust and have worked great since ACS installed them in 2003….

Eric, Implantable Medical Product, IS07 600 S.F. T RH Control, Woburn, MA

ClassUS FED STD 209E

Maximum  Particles/ft³

ISO equivalent
>0.1 um>0.2 um>0.3 um>0.5 um>5 um
 135731ISO3
 10350753010ISO4
100100ISO5
100010007ISO6
10,00010,00070ISO7
100,000100,000700ISO8

ISO 14644-1 Cleanroom Standards

ClassMaximum  Particles/m³FED STD 209E equivalent
>0.1 um>0.2 um>0.3 um>0.5 um>1 um>5 um
ISO 1102
ISO 210024104
ISO 31,000237102358Class1
ISO 410,0002,3701,02035283Class10
ISO 5100,00023,7000102,0003,5208,320 293Class 100
ISO 61,000,000237,000102,00035,2008,3202,930Class1,000
ISO 7352,00083,2002,930Class 10,000
ISO 83,520,000832,00029,300Class 100,000
ISO 935,200,0008,320,000293,000Room Air
CriteriaClass 10 ISO4Class 100 ISO5Class 1000 ISO6Class 10,000 ISO7Class 100,000 ISO8
Air changes per HR/Min500-600 / 8 to 10300 to 480 / 5 to 8180 / 360 /120 /0.33
Filter coverage %90 – 10060 – 7020 – 307 – 154  – 5
CFM per square foot85 – 9036 – 6518 – 329 – 164 – 8
Filter Efficiency99.9997% ULPAs99.997% HEPAs99.997% HEPAs99.997% HEPAs99.97% HEPAs
Ceiling TypeAluminum T-bar gridAluminum T-bar gridAluminum T-bar gridConventional T-bar gridConventional T-bar grid
Light Fixture typeTear drop or Flow thruTear drop or 2’x4’ cleanroom fixture2’x4’ cleanroom fixture2’x4’ cleanroom fixture2’x4’ standard fixture
Ceiling PanelFRP, Vinyl rock or MylarFRP, Vinyl rock or MylarVinyl rock or MylarVinyl rock or MylarVinyl rock or Mylar
Wall SystemModular or standard builtModular or standard builtModular or standard builtModular or drywallModular or drywall
Flooring coverWelded sheet vinyl or EpoxyWelded sheet vinyl or EpoxyWelded Sheet vinyl or EpoxySheet vinyl or VCTSheet vinyl or VCT
Flooring base2” to 6” coveCove or Aluminum base channelCove or Aluminum base channelCove or Aluminum base channelCove or Aluminum base channel
Air ReturnsRaised floor or center returnsLow wall on long axisLow wall at perimeterLow wallLow wall or ceiling