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Choosing the right frequency: 28kHz vs 40kHz vs 80kHz

Jan. 20, 2026

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Understanding Ultrasonic Frequency Options

What Are the Common Frequencies Used in Ultrasonic Cleaning?

Ultrasonic cleaners commonly operate at various frequencies, primarily 28kHz, 40kHz, and 80kHz. Each frequency has unique characteristics that cater to different cleaning needs. The choice of frequency can significantly influence the efficiency and effectiveness of the cleaning process.

Core Parameters Comparison Table

FrequencyTypical ApplicationCleaning PowerDetail Cleaning AbilityFoaming
28kHzHeavy-duty cleaningHighLowerHigher
40kHzGeneral cleaningModerateBalancedModerate
80kHzDelicate itemsLowHigherLower

Performance Evaluation Based on Frequency

Battery Life and Stability Across Frequencies

The operational efficiency of ultrasonic cleaners is often linked to their frequency. For instance, devices operating at 28kHz might consume more energy due to their higher cleaning power, while those at 80kHz often exhibit improved stability but may have longer cleaning cycles. Understanding these aspects helps users select the right model for their needs.

Real-World Usage Experiences

Users typically report varying experiences based on frequency. Here’s a brief overview:

  • 28kHz: Effective for industrial parts but may leave some residues.

  • 40kHz: A versatile choice suitable for most applications, balancing cleaning power and duration.

  • 80kHz: Best for jewelry and delicate items, minimizing potential damage while ensuring thorough cleaning.

Advantages and Disadvantages of Each Frequency

Assessing Pros and Cons

Each frequency has its strengths and weaknesses:

  • 28kHz:

    • Advantages: Strong cleaning power, effective on grease and gunk.

    • Disadvantages: Less effective for detailed cleaning, higher noise levels.

  • 40kHz:

    • Advantages: Versatile for various materials, reasonable cleaning duration.

    • Disadvantages: May not be as effective on heavily soiled items as lower frequencies.

  • 80kHz:

    • Advantages: Excellent for delicate items, low risk of damage.

    • Disadvantages: Slower cleaning processes, less effective on tough contaminants.

Recommendations for Different User Groups

Identifying Your Cleaning Needs

Choosing the right ultrasonic cleaner frequency boils down to your specific requirements:

  • If you need to clean industrial machinery parts, 28kHz is preferable.

  • For general-purpose cleaning of mixed materials, opt for 40kHz.

  • When working with sensitive items like jewelry, go for 80kHz.

Conclusion

In summary, selecting the right frequency in industrial ultrasonic cleaners is crucial for achieving optimal cleaning results. Each frequency—28kHz, 40kHz, and 80kHz—has its unique advantages that cater to different applications. At RedCrown, we offer a range of ultrasonic cleaners that allow you to choose the right frequency for your specific needs, ensuring effective and efficient cleaning solutions.

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