... designed for large optical shop, dental clinic, lab for long time using2. which transducer is similar with industrial cleaning ... design is different from household products, available for continuous long time working4. the loading range of the key ... straps and bands, glasses, dentures, toothbrushes, tablewareSpecifications: 1) Ultrasonic frequency: 42,000Hz 2) Tank material: stainless steel SUS304 3 ...