Abstract: The invention relates to an apparatus for electromagnetic treatment of a fluid comprising an electromagnetic radiation generator means for generating an electromagnetic signal with a customized spreading and distribution in space, a one-dimensional array (10, 20) of coil means (11, . . . , 15) and same number of magnet means (21, . . . , 25) in alignment therewith, arranged peripherally on supporting means consisting of a pair of rotatable discs (1, 1?; 2, 2?) according to a circular pattern concentric about an axis (1), wherein said coil & magnet means (11, . . . , 25) are centered on the vertices of a regular pentagon or having a fivefold of vertices wherein said generated electromagnetic radiation signal (S?) associated to the pentagonal circuitry (11.25; 16) is related to the golden ratio (?) defining the geometric proportion of the regular pentagon, wherein (I). It also relates to an electromagnetic treatment method. ? = 1 + 5 2 ? 1 , 618.