Filters aren't ubiquitous. They have to be built specifically to filter out things of a certain property.

A simple strainer is going to keep your grapes in the bowl, but let out water and everything small enough. A charcoal filter chemically binds to things it's filtering out, but not to anything it can't bind to. A polarizing filter filters light by its wavelength.

To create a filter for a "nano particle", you'd need to know the properties of the particle you're trying to filter for. Size, shape, polarity, chemical makeup, that sort of thing. Get whatever this "nano particle" is and put it under a microscope, document it, get that data.

Just using anything labeled as a "filter" is unlikely to work, especially since "nano" refers in science to objects 1000x smaller than "micro".

Filters aren't ubiquitous. They have to be built specifically to filter out things of a certain property.

A simple strainer is going to keep your grapes in the bowl, but let out water and everything small enough. A charcoal filter chemically binds to things it's filtering out, but not to anything it can't bind to. A polarizing filter filters light by its wavelength.

To create a for a "nano particle", you'd need to know the properties of the particle you're trying to filter for. Size, shape, polarity, chemical makeup, that sort of thing. Get whatever this "nano particle" is and put it under a microscope, document it, get that data.

Just using anything labeled as a "filter" is unlikely to work, especially since "nano" refers in science to objects 1000x smaller than "micro".