DO MORE WITH LESS WASTEWATER. Separation Dynamics specializes in water filtration systems that help you generate less wastewater and become more sustainable. Several of the world's leading aerospace manufacturers and MROs use our systems to clean waste water from parts cleaning and non-destructive testing. Fluorescent Penetrant Inspection (FPI) / Non-Destructive Testing (NDT) / Non-Destructive Inspection (NDI). Unique filtration process is highly efficient - wastewater from penetrant inspection is typically reduced by 95% or more. Filtered water is clean enough to re-use or safely discharge. Unique filtration technology is low maintenance and uses very few consumables.