4 Stage Lenticular Filter Skid4 stage filtration system for fast filtration of oleo resin tinctures. Modular solution for solvent streams post centrifugal separator used to wash botanical biomass. Protect your chillers and downstream process with our industry leading system. What it does well: Removes biomass from centrifuge streams and can recirculate this stream to return to a chiller. Prefilters biomass out of the stream to save lenticular life and reduce operating costs.