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Filter Media Technology
for Optimal Filtration Performance

OVERVIEW Donaldson Media Formulations Set the Standard for Filter Media Design &

Development
Filtration Performance!

From traditional cellulose to
Donaldson offers extensive filter media technology choices for liquid
filters – over 34 different formulations. These multiple formulations nanofiber – the development of
enable our engineers to develop filtration systems that exceed or match a proprietary filtration substrates is
wide variety of customer specifications. at the heart of every Donaldson
filtration system. If one of our
existing media formulations
Synthetic media captures more and smaller contaminant than cellulose
media. When an application requires higher efficiency filtration than does not meet our customer’s
what cellulose filter media can deliver, Donaldson uses synthetic media specifications, our scientists use
technology. our in-house media development
laboratory to develop new
formulations that meet or exceed
Look for more information on filtration media available within the fuel,
lube and coolant filtration sections. your requirements.

Media Characterization Testing
• Proprietary formulations
Synteq for Lube Filtration • Permeability
Synteq filter media • Tensile strength
technology in Donaldson • Mullen burst
Endurance™ lube filters is • Basis weight
ideal for equipment owners
who want to extend their oil • Pore size
drain intervals. • Thickness
• Gurley stiffness
• LEFS bench
Synteq for Fuel Filtration • 3-Point bend
This multiple-layered
media technology is
designed specifically to In-House Media Mill
remove contaminant AND • For application development
water from the fuel stream. • Trial media production runs
• Development of proprietary formulations

Synteq for Coolant Filtration
Synteq filter technology is used in our Donaldson
Endurance™ Plus coolant filters, which are designed
with the efficiency and capacity to allow for
extended drain intervals.
Media Durability
Donaldson uses a variety of techniques to enhance
filter media so it can withstand the high differential
pressures found in typical applications. Oven-curing,
wire backing and multiple layers all contribute to Filtration Performance Testing
our media integrity.
• Particle counting
• Multi-pass testing
• Water removal efficiency

4 • Engine Liquid Filtration www.donaldson.com