If I am not mistaken, the Chlor -Floc you are referring to is a product made by "Pur" http://www.psi.org/pur-emergency-relief/how_pur_works.htm. It uses a combination of a chlorine dioxide treatment and a flocculant to remove particulates. In the US it is sold under a different company, I do not recall off the top of my head the name.

I have posted in the past about the different forms of water treatment and their pros/cons. I am sure it is found with a simple search.