(2) Nanofiltration systems, Koch Membrane manufacturer, (24) modules in parallel, 670 sq.ft. active membrane surface area. System includes: booster pump, 75 HP, 96 GPM @ 440 PSI; 50 gallon permeate collecting tank; 160 gallon rinse tank; controls, valves, instrumentation, switch gear. Tubes piping and valves all 316 stainless steel. Model number SELRO M790, serial numbers KM905599/2239, new 2001, /2328 new in 2004. Last used to desalt dyes. Can be used as R.O. or ultrafiltration with change of membranes. All skid mounted on stainless steel frame. Cleaned and in excellent condition.