described herein is an improved method for the fabrication and use in modifying the physicochemical properties of water , as in strong , high density gradient application . this new approach provides in situ devices capable of inexpensive and effective water modification and treatment . the underlying concept is based upon the use of fine particle super ferromagnets or super paramagnets dispersed in nonmagnetic media . these media can be materials such as brass , cellulose or a wide variety of ceramics . nonaqueous applications include the removal of impurities from liquid polymer streams . other applications involve pseudo polymers or fluids exhibiting weak inter - and intra molecular forces .