DSR-22 Digital Orbital Shaker Features: DSR-22 is the upgraded version of the traditional RPR, TRUST, VDRL screening and test orbital shaker for syphilis. It can be also widely used in mixing for various kinds of flat type labwares, such as: petri dish, culture plate, etc. Equipped with Brushless motor, it can run smoothly and quietly, thus guarantee a long service life. LCD with backlight can display the current speed, time and operation mode, convenient for readingand setting. Precise digital time and speed setting can easily carry out the continuous operation mode. Safe operation protection function adopted. Wide-range voltage design. Avoid the interference to the equipment by instable voltage.