Heavy Duty Magnetic Stirrers utilize a rotating magnetic field [created by a permanent magnet] MI to induce variable speed stirring action. These Magnetic Stirrers are equipped with small Teflon rotor that helps in the stirring process. These Magnetic Stirrers are made using quality grade material that makes them suitable for heavy duty application. Heavy Duty Magnetic Stirrers are fitted with pilot lamp to work on 220/230 volts A.C supply.