Ultrasonic is sound generated beyond human audible level. In real life, high pitch sound is created by high frequency, and alternatively, the low and base tone is created by low frequency. Frequencies above 16 kHz in general are being considered as ultrasonic. Typical ultrasonic frequencies used for cleaning purpose are from 20 kHz to 80 kHz.

There is very little, but if you have any doubt we strongly recommend you contact manufacturer of the item you want to clean first. However we do know that we would not recommend the following without getting approval from the manufacturer first: Some precious stones eg, emeralds Some plastics some plastics are porous and the ultrasonic cleaning can cause some whitening.

This list is almost endless. Provided the product is non porous and can normally be immersed in water almost anything can be thoroughly cleaned.

Here are some examples:

Jewellery especially gold, silver & platinum

Watchstraps & Waterproof Watches

Coins and other collectibles

Glasses & Sunglasses

PCB Boards etc

Engine/Model parts

Toothbrushes & Dentures

CD & DVD's (Household series VGT-1000)

Easy handling

Shorter cleaning time

Less chemistry

Low cleaning temperatures

Reproducible result