Air Quality Standards

ISO 8573-1:2010 – Compressed Air Standards

The following table shows all of the classes within ISO 8573-1:2010. To choose which class meets your requirements, assess what dewpoint you need, the permissible remaining levels of oil and remaining dirt particles.

ISO 8573-1:2010  Class 1-4-1 for example would be a refrigeration dryer with a high quality coalescing filter.

QualityClass

Particle Size In Microns

Pressure Dewpoint

Oil Content

Recommended dryer to meet ISO Standard

0

0.1

-70°C

More stringent than Class 1

Desiccant

1

0.1

-70°C

0.01 Mg/m³

Desiccant

2

1

-40°C

0.01 Mg/m³

Desiccant or membrane

3

5

-20°C

1 Mg/m³

Desiccant or membrane

4

15

+3°C

5 Mg/m³

Refrigerated or membrane

5

40

+7°C

25 Mg/m³

High inlet Temp.Dryer

6

-

+10°C

-

High inlet Temp.Dryer

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