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2017 Fueltec Model CF50E Fuel Polishing System
Fueltec Systems exceed the engine manufacturers recommended
ISO 18/16/13
cleanliness target.
ISO Fuel Requirements
The standard established by ISO (International Organization for Standardization) pro-
vides a common measurement system that engine and
fuel system manufacturers use to designate acceptable particle levels in the fuel system.
Determining fuel cleanliness requirements includes the
measurement of both particle size and count. ISO 4406 utilizes a series of three numbers
(18/16/13) to identify the particle count per milliliter at
4, 6 and 14 micron sizes. Engine manufacturers recommend ISO 18/16/13 or better as the
cleanliness target in fuel tanks.
A micron is
a metric
measure
equal to one
millionth of a meter, or 1/25,000th of an inch. The smallest particle visible to the naked eye is 40 microns
across. A human hair is 80 microns in diameter, and a single grain of talcum powder is 15 microns.
