Elma stands behind their products. All Elma ultrasonic cleaners come with an industry-best 2 year warranty. If the unit malfunctions because of a manufacturing defect, simply call us and we'll repair or replace the unit. Fast, Quiet, thorough laboratory instrument cleaning. Ideally suited for the stringent cleaning demands of all types of labware: glass, plastic, or metal. Thoroughly remove particles from sieves in food, environmental, and analytical laboratories. We offer special equipment for cleaning individual sieves or four 8-inch sieves simultaneously.