SDS Kerr 4000 Amalgamator is an universal high-speed amalgamator, controlled by a micoprocessor to ensure a precise and consistent mix.With the width of the oscillating range, the mixing frequency and your selected time, the SDS Kerr 4000 provides a perfect homogeneity and consistency that is ideal for a wide range of amalgams. For safe operation, the SDS Kerr 4000 deactivates by opening the front cover to access the capsule.