CEILING FILTER COVERAGE

CEILING FILTER COVERAGE

CLASS – ISO 14644 (PER FED. STND 209e) CEILING COVERAGE
ISO 8 (CLASS 100,000) 5 – 15%
ISO 7 (CLASS 10,000) 15 – 20%
ISO 6 (CLASS 1,000) 25 – 40%
ISO 5 (CLASS 100) 50 – 100%
ISO 4 (CLASS 10) 100% *
ISO 3 (CLASS 1) 100% *
ISO 2 AND CLEANER 100% *

 

ISO CLASS AIR CHANGES PER HOUR CEILING COVERAGE
ISO 1 500 – 750 80 – 100%
ISO 2 500 – 750 80 – 100%
ISO 3 500 – 750 60 – 100%
ISO 4 400 – 750 50 – 90%
ISO 5 240 – 600 35 – 70%
ISO 6 150 – 240 25 – 40%
ISO 7 60 – 150 15 – 25%
ISO 8 6 – 60 5 – 15%

 

ISO CLASS FED-STD 209E CLASS ≥ 0.1μm ≥ 0.2μm ≥ 0.3μm ≥ 0.5μm ≥ 1μm ≥ 5μm
ISO 1 10 2
ISO 2 100 24 10 4
ISO 3 (CLASS 1) 1,000 237 102 35 8
ISO 4 (CLASS 10) 10,000 2,370 1,020 352 83
ISO 5 (CLASS 100) 100,000 23,700 10,200 3,520 832 29
ISO 6 (CLASS 1,000) 1,000,000 237,000 102,000 35,200 8,320 293
ISO 7 (CLASS 10,000) 352,000 83,200 2,930
ISO 8 (CLASS 100,000) 3,520,000 832,000 29,300

 

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