ISO 4406 Cleanliness rating

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Aug 16, 2003
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Mine never seems to move.
There are three lines running about a right angle,
the rating I guess is 20/17
The top number is 5000
The bottom is ~650

anyone have anything different?

Can a system be cleaner?

Even when I ran a By-pass, my numbers only changed a couple times...

As I figure it, since they never change, it must be like the Water and Fuel... at a set limit, and whenever a FLAG is triggered, then they look into it>>>>>
What would trigger the lab to run a REAL test?
 
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