Hans & Ernst, Here is a URL & photo of what I used: http://www.healthcarelogistics.com/mall/more.asp?fmmore=12549 I notice they have filtration capacity listed. I'm wondering if the filter loses effectiveness after that volume. Paul www.PaulRoark.com
Message
RE: [Digital BW] To Paul R, UT1 and 7500
2005-03-18 by Paul Roark