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I'm not questioning the filter manufacturer; they make quality filters.

It's Berkey's claims that i find suspect.

It's all about the media bed and contact time...so, if the cartridges...

Robert,

I know who manufactures the filter cartridges that Berkey is using. I personally have conversed with representatives of both the filter company and the manufacture of the KDF material; I...

Robert,

Berkey is claiming fluoride reduction by KDF media.

You say Berkley uses activated alumina; I followed the link and there is no mention of alumina...

Something is rotten in...

If that is Berkey's statement; they should be more careful to not make misleading statements.

Robert,

Your post clearly identified KDF as the fluoride reduction agent...

What is the rated capacity for activated alumina...probably a couple hundred gallons?

As far as I know; KDF is not rated for fluoride removal...

How much KDF material is used in the Berkey filter system?

KDF is an ion-exchange media that is great for reducing the chlorine load...

Most likely there is no sure method of fluoride removal...

A significant reduction is better then nothing...no?

You need to look at the data sheet for the reduction %'s for the given system you...