I am conducting research on the separation of microplastics from soil samples and would like to inquire about the appropriate filter unit to use for this process.

Specifically, after soil and microplastics are mixed and filtered, both components tend to collect on the filter paper. Could you suggest the most effective filter unit (e.g., vacuum filtration setup, Buchner funnel, or any specific type of membrane filter) and pore size suitable for isolating microplastics, especially when working with diverse soil texture