How to Choose the Frequency of an Ultrasonic Cleaning Machine?A Super Practical Selection Guide Is Here!
Jun 19, 2025
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If you want an ultrasonic cleaning machine to achieve the best cleaning effect, choosing the right frequency is the key. In the laboratory, residual chemical reagents in culture dishes and tiny impurities in pipette tips need to be precisely removed to ensure the accuracy of experimental data. In industrial production, stubborn oil stains on mechanical parts and sintering residues of automotive components require disintegration via high-frequency vibration. When cleaning precision electronic components, dust removal at an appropriate frequency is essential to avoid damage. Mastering frequency selection skills can solve various cleaning problems. Next, let's uncover the cleaning "superpowers" of different frequencies.
1. Cleaning "Specialties" of Different Frequencies
An ultrasonic cleaning machine is mainly composed of a cleaning tank, a transducer, a driver, and a control board. The frequency generated by the transducer directly determines the cleaning effect. Let's explore the characteristics and applicable scenarios of different frequencies:
| Frequency Type | Common Frequency Values | Cleaning Principle | Applicable Items | Application Scenarios |
|---|---|---|---|---|
| Low - frequency Cleaning | 25 - 28kHz | Fewer vibration times but strong force; generate large bubbles with strong bursting energy | Items with wear - resistant surfaces and heavy dirt | Pretreatment of machined parts, deep degreasing of auto repair parts, heavy - oil - dirt cleaning of catering kitchenware |
| Medium - frequency Cleaning | 40kHz and above | More vibration times, delicate force; small and dense bubbles | Precision, fragile items or items with high surface requirements | Cleaning of electronic components before assembly, daily maintenance of jewelry, dust removal of optical glasses lenses |
| High - frequency Cleaning | 60kHz - 200kHz | Sound waves are directionally concentrated; extremely small and fine bubbles; energy is concentrated but intensity is weak | Ultra - precision items with zero - damage requirements | Cleaning in the manufacturing process of semiconductor chips, ultra - clean treatment of high - end laboratory vessels, maintenance of precision components of micro - electro - mechanical systems |
2. "Bonus Points" to Improve Cleaning Effect
In addition to frequency, several other factors can enhance the cleaning performance:
Cleaning Medium
Commonly used cleaning media include chemical solvents and water-based agents. The combination of chemical action and ultrasonic physical vibration ensures thorough cleaning. For example, using a specialized degreasing agent with ultrasonic waves doubles the effect on oil stains, while a mild neutral agent effectively removes fingerprints and dust from optical lenses.
Power Density
Higher power leads to faster cleaning, but when treating delicate items, you must regulate the time and power to avoid damage. For instance, when cleaning fragile glassware, reducing the power and extending the cleaning time is necessary.
Cleaning Temperature
Ultrasonic waves exhibit the optimal cavitation effect at 30–40℃. When used in conjunction with cleaning agents, the cleaning effect is maximized at a water temperature of 40–50℃. Moderately increasing the temperature can accelerate the chemical reaction of the cleaning agent and better dissolve dirt.
3. Safety Precautions for Use
When operating an ultrasonic cleaning machine, safety should always be a top priority:
Equipment Safety
Ensure the device is grounded before use. Never operate the machine without liquid in the tank, as this can damage it; avoid activating the heating function without liquid.
Operation Specifications
Use a cleaning bracket to secure items and prevent direct contact with the tank bottom. Regularly clean debris from the tank. Do not use flammable or explosive agents (e.g., alcohol, gasoline), and use highly corrosive or volatile agents via an indirect method.
Liquid Level Requirement
It is optimal to fill the cleaning tank with liquid up to 2/3 of its capacity. This ensures the best cleaning and degassing effects.
If you're still unsure how to choose, explore Scientz Bio's ultrasonic cleaning equipment! Ranging from low to high frequencies, our product lineup includes the D series, DT heating series, DTD power - adjustable series, DTS dual - frequency series, DTY sweep - frequency series, industrial series, etc. We also offer non - standard customization services to meet multi - dimensional cleaning frequency requirements. Choose SCIENTZ, and let professional frequency settings achieve excellent cleanliness! Consult now to get your customized cleaning solution.