Montanero wrote:
> I would like to find a good chemical lab to help me test the
> water purification methods, along with all of the other ones > I already have.

You don't need to. In our ligatious world anyone selling a purifier that doesn't do as advertised, is heading for financial ruin.
But though it may do everything it claims, that might not be enough. They'll truthfully list all the things they remove.
But what about what they don't list?
As I commented earlier; filters aren't purifiers they won't remove viruses. Even idone won't remove Cryptosporidium. Not sure if there are any filters that remove chemicals.

qjs