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What liquid goes into an ultrasonic cleaner?

Ultrasonic cleaners have become indispensable in many areas – whether in jewelry care, workshops, laboratories, or medical settings. They clean thoroughly, gently, and reach even the smallest crevices and hard-to-reach places. But one key question always arises: What kind of fluid actually belongs in an ultrasonic cleaner?

There is no general answer to this question – it depends heavily on the material, the type of soiling and the desired cleaning result.

How does an ultrasonic cleaner work?

An ultrasonic cleaner works with high-frequency sound waves that create so-called cavitation bubbles in a liquid. These microscopic bubbles implode in fractions of a second, removing even stubborn dirt from surfaces. Choosing the right cleaning fluid is crucial for this process to work effectively.

Water in the ultrasonic cleaner: distilled or tap water?

Basically, every ultrasonic bath requires a liquid as a medium – preferably distilled water .

Distilled water prevents limescale and mineral deposits, which can have a negative impact on the device and objects being cleaned.
Tap water can also be used in some cases, but is less recommended if the water hardness is high.

Light soiling can be removed with water alone. However, additional cleaning concentrates are often used for optimal results.

Why special cleaning concentrates are useful

To significantly increase cleaning performance, we recommend adding ultrasonic cleaning concentrates . These are specially developed for cavitation cleaning and:

increase dirt removal,
prevent damage to sensitive surfaces,
are tailored to different materials and applications.

Unlike detergents, alcohol or oils, these concentrates do not leave any aggressive residues and do not impair cavitation.

Which cleaning solution for which application?

Glasses and optical devices:
Universal concentrates such as EM-090 reliably remove skin oils, dust, and deposits from lenses and frames – without scratches or streaks.
Jewelry and watches:
The alkaline EM-080 can be used to gently clean tarnished precious metals and delicate gemstones.
Metal parts in workshops:
The powerful EM-404 dissolves oil, grease, rust and even surface rust – ideal for screws, tools and engine components.
Medicine and dentistry:
The EM-060 cleaner reliably removes blood, saliva and cement residues and is specially developed for dental instruments or dentures.

Risks of using the wrong fluid

The use of unsuitable products such as dishwashing liquid, household cleaners or even oil can:

attack the surface of the objects to be cleaned,
leave residues,
shorten the lifespan of the ultrasonic cleaner,
or significantly reduce cavitation.

Therefore, only use suitable concentrates that are approved for ultrasound devices.

Conclusion

Choosing the right fluid is crucial for the cleaning results in the ultrasonic bath.

Distilled water is suitable for basic operation,
For stubborn dirt or special applications , ultrasonic cleaning concentrates are the best choice.

With the right cleaning agent, you will not only achieve perfect results, but also extend the lifespan of your ultrasonic device and the objects being cleaned.