Li-filters tsa Magnetic li entsoe ka lisebelisoa tse matla tsa makenete le skrineng sa "barrier filter". Li na le matla a khoheli a matla a khoheli ka makhetlo a leshome 'me li khona ho hohela litšila tsa ferromagnetic tse boholo ba micrometer ka tšusumetso ea phallo ea mokelikeli hang-hang kapa boemo bo phahameng ba phallo. Ha litšila tsa ferromagnetic ka har'a hydraulic medium li feta lekhalo lipakeng tsa mehele ea tšepe, li kenngoa ka har'a mehele ea tšepe, ka hona li fihlela phello ea ho sefa.