美国VWR超声波清洗仪VWR UltrasonicCleanerswithMechanicalTimerSupplier:VWRInternational Ultrasoniccleanersprovidehighlyeffectiveandefficientcleaningoflaboratoryglasswareandinstruments.Theyincorporatethesamerugged,high-power40kHzultrasonictransducersfoundinindustrialsystems.TheseLangevin-typemetal/ceramicdevicesarecoupledwithafrequency-sweepfunctionthatensuresuniformcleaning.