ISO 4406 determines the cleanliness of a fluid and is used by OEMs to define sentencing limits of the components of an injection system, engine diesel or hydraulic system.
WHAT IS ISO 4406?
UNDERSTANDING WEAR
The ISO 4406 test is a granulometry analysis that is carried out on the fluid and a qualification of 3 codes is obtained:
CODE 1: particle content greater than 4 microns per ml
CODE 2: content of particles greater than 6 microns per ml
CODE 3: content of particles greater than 14 microns per ml
Depending on the type of component, OEMs define an ISO code that determines the correct operation of the system.
