Product introduction: ST series handheld ultrasonic cell crushing transducer is small in size and light in weight. The manual mode can be switched to automatic or manual pulse operation mode, which can freely control the work and cut-off time. It is flexible and convenient to use and is not limited by the size of space. It is suitable for the treatment of a few or trace experimental samples, such as the samples arranged on the experimental platform, which can be completed quickly and conveniently. The automatic mode is suitable for long time and large sample quantity experiments, which can be completed in the bracket or soundproof box. Product features: Manual and automatic mode of work freely switch, easy to operate, improve work efficiency; The transducer is small in size and light in weight. It can be carried by hand or placed in a fixed bracket or acoustic enclosure. The ultrasonic power can be adjusted continuously and the optimum experimental conditions can be found. LCD large screen display, the program can be set to store 50 groups of experimental data; It has over temperature, delay and fault protection, as well as an independent over temperature, delay and fault alarm system, which protects the test sample to the maximum extent. RS232 communication interface is optional and can be upgraded to realize data transmission with PC or PLC for remote control. Main applications: Instruments are widely used in biology, microbiology, physics, zoology, agriculture, pharmacy, petroleum and other fields of teaching, scientific research, production. Good helper for small sample size and large sample size, such as cell breakage; Protein extraction, nucleic acid extraction; Trim the DNA/RNA; Research on nanotechnology and the dispersion of nanomaterials; Immunoprecipitation of chromatin; Sample homogeneity, emulsification; Accelerating dissolution, accelerating chemical reaction and other sample processing. Technical parameters: Model: ST – 250D Working frequency (KHz) : 20-25 Ultrasonic power (W) : 250 continuously adjustable Crushing capacity (ML) : 0.1-150 The sample temperature protection (℃) : room temperature - 99 Working mode: automatic or manual Random: the amplitude Φ 3 Optional: the amplitude Φ 2, Φ6, Φ8 Duty cycle: 0.1-99.9% Power supply (V) : 220/110 Foot switch: optional