DEMA MixRite Water-driven ejector is a hydrodynamic matching pump that requires no electricity and can be accurately distributed under different water pressure and water flow. Perfect for in-line injections. Available in multiple types of models with multiple injection rates and different materials, it can withstand many types of corrosive acids, bases and solvents. Series 500 is available as CW models with seals and components for mildly corrosive additives, 1400 models for corrosive materials, acids, bases, solvents, and PVDF models for corrosive additives.