Air Quality – Understanding Air Quality and what Oil Free Air really means.
Sullair has an extensive range of air quality filtration systems, to provide the highest standard of air for all applications, including:
- Breathing Air
- Food Grade Air
- Hospital/Medical- Sterile Air
- Oil Free Air
- Instrument Air
- General Plant Air
Sullair performance validation
Sullair filters have been designed to provide compressed air quality that meets or exceeds the levels shown in all editions of ISO8573-1:2010 International Air Quality Standard and the BCAS Food Grade Compressed Air Code of Practice. Sullair filters are not only tried and tested by Sullair, but filtration performance has also been independently verified by Lloyds Register.
Specifying air quality (purity) in accordance with ISO8573-1:2010, the international standard for Compressed Air Quality.
ISO8573-1 is the primary document used from the ISO8573 series as it is this document which specifies the amount of contamination allowed in each cubic metre of compressed air.
ISO8573-1 lists the main contaminants as Solid Particulate, Water and Oil. The purity levels for each contaminant are shown separately in tabular form, however for ease of use, this document combines all three contaminants into one easy to use table.
Specifying air purity in accordance with ISO8573-1:2010
When specifying the purity of air required, the standard must always be referenced, followed by the purity class selected for each contaminant (a different purity class can be selected for each contaminant if required).
An Example of how to write an air quality specification is shown below: ISO 8573-1:2010 Class 1.2.1
- ISO 8573-1:2010 refers to the standard document and its revision, the three digits refer to the purity classifications selected for solid particulate, water and total oil. Selecting a air purity class of 1.2.1 would specify the following air quality when operating at the standard’s reference conditions:
- Class 1 Particulate
In each cubic metre of compressed air, the particulate count should not exceed 20,000 particles in the 0.1 - 0.5 micron size range, 400 particles in the 0.5 - 1 micron size range and 0 particles in the 1 - 5 micron size range.
- Class 2 Water
A pressure dewpoint (PDP) of -40°C or better is required and no liquid water is allowed.
- Class 1 Oil
In each cubic metre of compressed air, not more than 0.01mg of oil is allowed. This is a total level for liquid oil, oil aerosol
- Class 1 Particulate
Contact your Sullair consultant to determine the air quality requirements for your application