Ufa wa ma ion oipa ndi mtundu wa mchere wophatikizika womwe umapangidwa kapena kugawidwa ndi anthu pogwiritsa ntchito mfundo yopanga ma ion oipa m'chilengedwe. Nthawi zambiri ndi ufa wa tourmaline + lanthanide kapena zinthu za rare earth. Chiŵerengero cha zinthu za rare earth ndi chachikulu kwambiri kuposa cha ufa wa tourmaline ndi zinthu za rare earth. Chimawerengedwa kuti ndi choposa 60%.

Ufa wathu wa ion negative ukhoza kutulutsa ion negative komanso ultra infrared ray, thanzi komanso zachilengedwe.