Bewildering Oil Analysis Results
Dr. John K. Duchowski, Principal Scientist, Pall Corporation,
Scientific & Laboratory Services Dept.
Guessing at 'what these particles might be' is not going
to provide the right answer. They need to be deposited
on a membrane (25 mL to 50 mL sample filtered through
0.8 µm 25 mm dia. patch), examined microscopically
and subjected to surface analytical technique such as
XES or PIXE.
Since neither the distribution nor the ISO code is provided,
they could equally be air, esp. if the ISO shows an odd
distribution such as 21/21/21 or 21/21/12. The first would
signify severe aeration while the latter compressed air
such as that which can be found in samples obtained directly
downstream of a high pressure pump.
Water bubbles can be exluded due to the low water content.
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