Magnetic water treatment

Carbonates formed by heating water containing +120 mg(Ca)/l are characterized by X-ray di!raction and electron microscopy. Tests on 32 pairs of samples establish, at the 99.9% probability level, that drawing water through a static magnetic "eld (B+0.1T, +B+10 T/m) increases the aragonite/calcite ratio in the deposit. There is an incubation period of several hours, and memory of magnetic treatment extends beyond 200 h. ( 2000 Elsevier Science B.V. All rights reserved.