The “F series” of filter for aspiration and deodorization of the soft-soldering fumes was expressed and realized to consent a modularity in the filtering apparatus which increase the employment range very much. Studied for electronics factories for aspiration and filtering fumes from working place up to 12 (F 1200), wave soldering, soft-soldering, are also applied in pharmaceutic-chemistry fields, gold craft factories, professional schools. Filtering is performed through 3 different stages with increasing efficiency visually monitored by a differential manometer, or by a reusable filtering cartridge; in this model the differential manometer is supplied as optional.