ISO – 8573.1 Standards

According to ISO-8573.1 : 2010 Standards, compressed air quality is identified and classified as shown in the table below. The air purity qualification is classified and evaluated with respect to the contamination level of air under three major topics; by particulate size and quantity, water quantity and oil quantity.

ISO - 857.1 Compressed Air Quality Standard : 2010
Quality
Class
Solid Particulate Water @Oil
Max. Number of Particles per m3 Particle Size Concentration Vapour Liquid Total
0,1 - 0,5 pm 0,5 - 1 pm 1 - 5 pm mikron mg/m3 Dewpoint gr/m3 mg/m3
1 <20000 <400 <10 - - -70°C - <0,01
2 <400000 <6000 <100 - - <-40°C - <0,01
3 - <900000 <1000 - - <-20°C - <1
4 - - <10000 - - <+3°C - <5
5 - - <100000 - - <+7°C - -
6 - - - 5 5 <+10°C - -
7 - - - 40 10 - 0,5 -
8 - - - - - - 5 -
8 - - - - - - 10 -
ISO 8573.1 Specifies Industral Standards for Compresses Air Quality

By using ISO - 8573.1 Table, desired air quality class can be chosen according to maximum contamnation level


Example: ISO 85731 - Air Quality Class 1*.2*.1*
Particulate (number/m3) * Class 1 0,1 - 0,5pm 1 - 5pm
<20000 <400 <10
Dewpoint (C)° *Class 2 <-40°C
Oil (mg/m3)° *Class 1 <-0,01

The compressed air quality need can easily be determined with the table above…Example: ISO 8573.1 – Air Quality Class 1*.2*.1* means; Quality Class 1 with respect to partical contaminant in 1 m3 of compressed air, Quality Class 2 with respect to remaining wator vapor in -40ºC dew point and Quality Class 1 with respect to oil contaminant in 1 m3 of compressed air