ISO QUALITY CLASS
SOLID / DIRT Particle size in micron
WATER @ 100 psi
Pressure Dewpoint
OIL
(including vapor)
° C
° F
Mg /m3
PPM
0
As specified
1
0.1
-70
-94
0.01
0.008
2
-40
0.08
3
5
-20
-4
0.8
4
15
+3
+38
40
+7
+45
25
21
6
-
+10
+50
Air Quality Recommended Standards
Applications Classes
Typical Quality Classes
Dirt
Water
Oil
Air agitation
Air bearings
Air gauging
Air motors
Brick & glass machines
Cleaning of machine parts
Construction
Conveying, granular products
Conveying, powder products
Fluidics, power circuits
Fluidics, sensors
Foundry machines
Food & beverages, direct air contact
Food & beverages, NOT direct air contact
Hand operated tools
Machine tools
Mining
Micro-electronics manufacture
Packaging and textile machines
Photographic film processing
Pneumatic cylinders
Pneumatic tools
Process control instruments
Paint spraying
Sand blasting
Welding machines
General workshop air
* required
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