This company offers variable-speed electric dispersers for use with batches up to five gallons. The electric motors come in 1-1⁄2, 2 or 3 horsepower, and are either totally enclosed fan-cooled or explosion proof. The speed range is 1000 to 4100 RPM, and a digital tachometer is optional. Call 800/942.4383 or visit www.indco.com.