Air line filter for air bearing arm


Hello Audiogoners. Does anybody know what to use and where to get a filter to put in line right after the air pump? Thanks.
markshvarts
Thanks to all. I received an e-mail from ET to use automotive clear plastic fuel filters, $5 max. Already installed and works great. Go figure!
What affect does this inline filter have on airstream delivery?

I assume this filters the air of particles to keep the air bearing clean?

Do you install this close to the pump or closer to the turntable?
I'm curious to hear a response to Sqeeqy200's question about too. I have the Airtech MG-1 air bearing arm, and am unsure how to optimize air delivery and prevent any maintenance issues later down the road.
Logically, one should install the air filter at the inlet side of the air pump, thus protecting all the parts of the air system, including the pump.