The new 1-S attritor from this company features a variable-frequency drive that adds versatility. It includes a digital readout for RPM, amperage and the percent of torque. Although the design of the equipment is new, it still can accommodate the same tanks, shafts and arms as past models. Tanks are available in stainless steel, as well as alumina, silicon carbide, zirconium oxide, rubber, Tefzel® and polyurethane linings.