The dual drive lab shaker incorporates a heavy dual drive vibratory design. This rugged design allows for quick and repeatable sieve analysis every time. Adjustable, concentric, dual drive rotary electric vibratory drives provide optimum circular and linear vibration of your material. The Dual Drive Lab Shaker can accommodate up to 8 full height sieves or 16 half height sieves. Applications range from fine powders to coarse aggregates. The Dual Drive Lab Shaker can also be equipped with the HK ultrasonic sieving system for hard to sieve products that require very fine mesh sizes down to 625 mesh.