Scribd
Upload
331 views1 page

ISO 8573 Purity Classes

ISO 8573-1 is an international standard used to classify the purity of compressed air by measuring particulate contamination, water content, and oil contamination. It establishes 9 classes for particles of different sizes, 8 classes for water content based on dew point, and 9 classes for oil contamination including liquid, aerosol and vapor. Trace Analytics offers test methods that can determine purity classification in the shaded areas of the ISO 8573-1 table which include most classes except those requiring specialized equipment for very small particle counting.

Uploaded by

deliamarcela2894
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
331 views1 page

ISO 8573 Purity Classes

ISO 8573-1 is an international standard used to classify the purity of compressed air by measuring particulate contamination, water content, and oil contamination. It establishes 9 classes for particles of different sizes, 8 classes for water content based on dew point, and 9 classes for oil contamination including liquid, aerosol and vapor. Trace Analytics offers test methods that can determine purity classification in the shaded areas of the ISO 8573-1 table which include most classes except those requiring specialized equipment for very small particle counting.

Uploaded by

deliamarcela2894
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 1

ISO 8573-1:2010 Contaminants & Purity Classes

The ISO 8573-1 specification is used by a variety of industries requiring clean, dry, and contaminant free compressed
air. Industries that use this compressed air testing specification include Food, Pharmaceutical, Medical Device, Power
Generation, Plastics, Automotive, Electronics, and more. Any process that uses compressed air and needs clean
compressed air having no contaminants flawing the final product often use ISO 8573 in its entirety or adopt sections of
it, creating a custom specification.
ISO 8573-1 Purity Classes are listed below; shaded areas indicate classes for which Trace Analytics methods apply:

Particles Water Oil


Liquid, Aerosol, &
By Particle Size
Class By Mass Pressure Dewpoint Liquid Vapor
(maximum number of particles per m3) See Note 3
See Note 2
0.10 – 0.5 µm 0.5 – 1.0 µm 1.0 – 5.0 µm mg/m 3 °C °F g/m3 mg/m3
0 As specified by the equipment user or supplier and more stringent than class 1
1 ≤ 20000 (3) ≤ 400 ≤ 10 - ≤ -70 ≤ -94 - ≤ 0.01
2 ≤ 400000 (3) ≤ 6000 ≤ 100 - ≤ -40 ≤ -40 - ≤ 0.1
3 - ≤ 90000 ≤ 1000 - ≤ -20 ≤ -4 - ≤1
4 - - ≤ 10000 - ≤ +3 ≤ +37 - ≤5
5 - - ≤ 100000 - ≤ +7 ≤ +45 - -
6 - - - 0 – ≤5 ≤ +10 ≤ +50 - -
7 - - - 5 – ≤10 - - ≤0.5 -
8 - - - - - - 0.5 – ≤5 -
9 - - - - - - 5 – ≤10 -
X - - - > 10 - - > 10 >5
Note 1: Shaded areas indicate classes for which Trace Analytics methods apply. Others require techniques outside of Trace Analytics scope. See note 3.
Note 2: ISO 8573 Oil includes aerosol, vapor and liquid oil. Liquid oil is typically sampled when wall flow is present, contamination is suspected, or results are
greater than 5 mg/m3. Trace Analytics, LLC can provide a separate kit for liquid oil testing.
Note 3: For Particle Class 1 & 2 (0.1 - 0.5 µm range only), a laser particle counter is required. Rental of this equipment is available on a reservation basis.

For additional information, contact Trace Analytics at CDATest@AirCheckLab.com or 512-263-0000 x4.

You might also like