The drum type of filter is generally regarded as one of the best, and
certainly one of the more cost effective.  There are better ones, but they do
cost Major Bucks, (Who incidently reports to General Expenses........groan.)

One of the better regarded brands of drum type is from Total Concept Systems,
or is it Total Concepts Inc., anyway, they are in St. Louis, and which ever
name it is, you should be able to get the phone number.

Alternately, gimme a call at work, and I will give you the number.

Rudy Sedlak
RD Chemical Company
415-962-8004

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