Laboratory ultrasonic cleaning machine frequency is the higher the better?

Laboratory ultrasonic cleaning machine is a new type of cleaning equipment developed for the high cleanliness of the laboratory. It can realize automatic cleaning of various experimental glassware, precision instruments, solve the traditional manual cleaning time-consuming and laborious, the effect is difficult to control the disadvantages, but also can avoid researchers exposed to harmful cleaning reagents, play a role in improving the laboratory cleaning environment.

As we all know, ultrasonic cleaning is based on cavitation effect, which is an important factor to determine the effect of ultrasonic cleaning, and ultrasonic frequency will directly affect the cavitation effect, so many people in the purchase of laboratory ultrasonic cleaning machine will focus on the frequency of this parameter. You know that frequency is the number of times a substance completes a periodic change in 1 second, but what is the ultrasonic frequency? As the name implies, this refers to the number of times a sound wave completes a periodic change per second, such as 20KHz, which means that the sound wave generates 20,000 vibrations per second.

Because the workpiece and dirt need to be cleaned in various industries, the frequency of ultrasonic cleaning is also different. Ultrasonic frequency applied in the field of cleaning can be roughly divided into low frequency, medium frequency, high frequency, megabif several grades. The frequency commonly used in general cleaning is 28KHz, 40KHz, 68Khz, 80KHz and 120KHz, among which 40KHz is the most widely used frequency in various industries. In the face of so many frequency choices, which frequency of the ultrasonic cleaning machine used in the laboratory is more appropriate?

Laboratory ultrasonic cleaning machine frequency is the higher the better? Cavitation effect decreases with the increase of frequency, low frequency, cavitation is easy to occur, the cleaning liquid by compression and sparse action has a longer time interval, so that cavitation bubbles can grow to a larger size before blasting, increase the aeration intensity, generally suitable for cleaning dirt and workpiece surface of high degree of adhesion field; High-frequency ultrasound, the reverse is true. It can be seen that medium-low frequency is usually used to clean large-particle dirt, medium-high frequency is used to clean micron level dirt, and megabif can be used to clean micron and submicron level dirt. After the experiment, utensils and instruments usually have different sizes of dirt particles attached to the surface, so in the laboratory field, different ultrasonic frequency combinations can be selected according to the cleaning needs, in order to achieve the best cleaning effect.