Specifications

Analyzing the Test Results
Once the automatic oil
sample test has been
completed, what next?
Solid contaminants in  uid
power systems vary in size,
shape, form and quantity. The
most harmful contaminants
are normally between 6
microns and 14 microns. The
ISO code is the preferred
method of reporting quantity
of contaminants.
The ISO code number
corresponds to contamination
levels relating to three sizes.
The  rst scale number
represents the number of
particles that are equal to and
greater than 4m (c) per ml of
 uid, the second number for
particles that are equal to and
greater than 6 m(c) per ml of
 uid and the third number for
particles that are equal to and
greater than 14 m(c) per ml
of  uid.
For example: An ISO code
20/18/14 indicates that there
are between 5,000 - 10,000
particles that are equal to and
greater than 4m(c), between
1,300 - 2,500 particles that
are equal to and greater than
6m(c), and between 80 - 160
particles that are equal to and
greater than 14m(c).
20