I have never researched which filters are available with this feature outside of the studies done in the sited links. All I do is dip water from a creek, add 10 - 15 drops of coloidal silver 500ppm to a quart. If the water is very questionable I filter it with MSR after 10 min.
Usually I just drink it after 10 - 15 min of swirling it around.
I've taken water from still water and moving rivers. I only got sick once in my life from water(Giardia). I was in Cancun Mexico. I had no silver with me. Thats somewhat ironic because Mexico is the worlds largest silver producer!