Putting hands, fingers, or any other body parts in an ultrasonic cleaner is highly dangerous and is therefore not advisable.
This is because when the cleaning process is ongoing in an ultrasonic bath, the high-power transducer in the machine produces sonic waves that continuously create millions of bubbles in the solution.
When these bubbles collapse (implode), they release intense energy so powerful that they can cause severe skin irritation. In many cases, these high-frequency ultrasonic waves can also harm the bones and tissues of the body joints, aggravating rheumatic diseases.
To minimize these risks, always wear protective gloves and eyewear when operating an ultrasonic cleaner. This precaution helps protect your skin from irritation, burns, and other potential harm, whether you’re using the device at home or in an industrial setting.
The Risks of Putting Hand in an Ultrasonic Cleaner
Many people assume it’s safe to wash their skin in an ultrasonic cleaner, thinking the tiny bubbles generated by sound waves are harmless. However, this is a misconception—even at low power settings these can cause significant damage to skin and underlying tissues.
Ultrasonic cleaners are designed for cleaning small items, like jewelry, eyewear, or electronic components. The powerful combination of heat, cavitation, and potentially harmful chemicals used in the device can have severe consequences which may include:
Burns: These machines generate heat during operation, turning the cleaning solution into a bubbling cauldron of potential skin damage. The high temperatures that boost cleaning efficiency can leave you with a not-so-efficient thermal injury.
Tissue Damage: The rapid formation and collapse of bubbles along with intense cavitation effect can turn your delicate tissues into collateral damage such as instant bruises, swelling, and even deeper injuries to muscles, tendons, and nerves.
Chemical Exposure & Infection: Potent cleaning solutions in ultrasonic cleaners are not just rough on dirt; they can be brutal on your skin too. Dip your hand in, and you’re signing up for a chemical cocktail of irritation, toxicity, and possibly an unwanted bloodstream guest list.
And beaware that cleaning solution isn’t just a mix of chemicals—it might be hosting bacteria, viruses, or other unwelcome pathogens. If you’ve got any cuts, scrapes, or tiny openings on your skin, you’re basically rolling out the red carpet for these microscopic troublemakers.
What to Do If You Mistakenly Put Your Finger in A Machine?
If you accidentally put your finger into an ultrasonic cleaner while it is running, take your finger out of the machine as soon as possible to minimize exposure to ultrasonic waves and cavitation effects.
You shouldn’t leave your finger in the ultrasonic cleaner for too long, as it will strip the oils from your skin, leaving your finger very dehydrated. While it will clean your finger and cause a slight tingling sensation due to the vibrations and soundwaves, no harm should come to your skin.
At the frequency range of 37-40kHz, the sound waves in the solution shouldn’t harm your finger. It will only clean the finger but also sometimes remove loose skin cells.
That said, I made the mistake of leaving my finger in too long. It was like a mild electrical shock excruciatingly painful, and the pain persisted for a couple of hours.
Remember that:
- Cavitation can cause microscopic injuries that might not be visible immediately. So, check your finger for any signs of irritation, redness, or skin damage after an hour.
- If you notice any unusual sensations such as swelling, persistent pain, or numbness, it could indicate deeper tissue or nerve damage caused by the ultrasonic waves.
- If you experience worsening symptoms, consult a doctor promptly. Inform them about the exposure to ultrasonic waves, as this is a less common type of injury and may require specific treatment.
To avoid repeating the mistake, always wear gloves when using an ultrasonic cleaner and remain cautious around the machine when it is in operation.
The Conclusion
Placing your hands in an ultrasonic cleaner can be quite painful. While it doesn’t appear to cause any permanent damage, it feels like hundreds of needles pricking your skin or you may feel like you have put your hand in a microwave oven. You can do it when the device is off, but I wouldn’t recommend doing it while it’s running.
Believe it or not, ultrasonic cleaners have claimed more than just dirt—they’ve cost people fingers and even parts of their hands. Accidental exposure to these machines isn’t just a minor mishap; it’s the kind of mistake that leaves you literally short-handed.
Proceed with caution, unless you’re okay with turning a cleaning session into a horror story.