MASSTAR stainless steel weights for laboratory balance and industrial scale calibrations are specially treated during manufacturing process to reduce both magnetic field strength and magnetic susceptibility of weights. The higher the magnetic susceptibility of a weight, the more likely it is to become magnetized and cause inconsistent weight measurements. MASSTAR weights are specifically designed to reduce magnetic susceptibility of weights in order to gain more accurate calibrations. Rice Lake Weighing Systems 230 W. Coleman Rice Lake, WI, 54868