Nuclear grade hepa filters PM content?

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Naitsabes

Member
Joined
Jul 25, 2007
Messages
23
Location
Tennessee
Wondering if any of the experienced hands here might clue me in on the possible PM content of a couple of old (late 90s) HEPA Filters I have in my "junk" pile?

The metallic portion of one quite clearly appears to be gold plated over a white metal (American Air Filters)

The other appears as an untarnished white metal (Flanders Corp.)

My googles suggest that PMs were used as catalysts on some HEPA filters but as to specifics on these makes I am drawing a blank.

Any help would be greatly appreciated.
 
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