I'm wondering what is the right zeolite to use. I've found >95% purity clinoptilolite, but I'm not sure if this is right, or it needs to be something like >99%.

Also, about the fine particles. Lots of sellers say their zeolite particles are under 3um (the one I'm eyeing says particles are between 0.2um and 3um). I'm thinking normal lab filter paper is not fine enough, right? Mine has a mesh that's 10um if I'm not mistaken, and it was the smallest I could find.

Am I missing something? Or is zeolite really that hard to properly filter?

If it's really that difficult to filter, I would think this technique is only useable for edibles, right?