Oregon Written Tattoo Practice Test

At what frequency should an ultrasonic unit be operated?

1. 20 to 30 kilohertz

2. 30 to 40 kilohertz

3. 40 to 60 kilohertz

4. 60 to 80 kilohertz

The correct answer is: 40 to 60 kilohertz

Operating an ultrasonic unit at a frequency range of 40 to 60 kilohertz is generally considered optimal for tattoo equipment. This frequency range provides effective cleaning and sanitization of tools and equipment without causing damage. The ultrasonic waves created at these frequencies help to generate tiny bubbles in a liquid cleaning solution, which collapse upon contact with the objects being cleaned. This process, known as cavitation, allows for the thorough removal of ink, blood, and other contaminants from intricate designs and hard-to-reach areas of tattoo instruments. The effectiveness of the ultrasonic cleaner in this frequency range ensures that the cleaning process is efficient and reliable, making it essential for maintaining hygiene and preventing cross-contamination in a professional tattooing environment. Frequencies significantly lower or higher than this range may either not provide enough cleaning power or could potentially harm delicate tattoo equipment. Therefore, using an ultrasonic unit within 40 to 60 kilohertz aligns with industry standards for safety and efficiency.