
Products & Services
Total Solutions for Liquid, Solid, and Gas Separation
Separation Engineering, Inc. provides equipment for the membrane separation industry. From custom equipment to piolot units, SEI has the capability to create separation equipment from start to finish. We work with the leading manufacturing in membrane products, and we offer a range ofproduction equipment for membrane applications
SEi takes pride in every system we engineer, design and manufacture. Every service that SEi offers helps customers develop and implement customized solutions for process needs. All business partners are selected based upon strict guidelines to meet our quality standards throughout the design and manufacturing process, regardless of whether the materials are PVC, CPVC, Hastelloy-C276, AL6-XN, or stainless steel.
SEi leads the industry in manufacturing and fabrication of equipment. The fabrication of equipment is done in-house, from all welding, to machining and assembly, to electrical and instrumentation installation. Our panel shop is qualified as a UL 508A facility. On completion of the assembly, we perform actual shop testing of the completed equipment to ensure simple field startups.


SEi designs equipment that epitomizes “practical creativity.” Our targeted innovation in machine design, 3-D modeling, structural & systems design, and advanced software technology creates a finished product that demonstrates a lightweight design and the utilized field knowledge of staff. The result? Optimized designs that are easy to build and cost-effective.
SEI is a leader in the design and construction of membrane process systems. SEI has years of design and process knowledge allow us to implement high tech, practical solutions to your process, water or wastewater application. The result is a cost effective, reliable, maintenance friendly solution that lets our customer focus their attention on their end product.


SEi owns and operates a fleet of over 30 pilot units that can be configured to meet any demand. They range from a 3 ft. ³ single vessel ion exchange MMF to a 2 vessel cross-flow filtration skid constructed of Hastelloy-C for demanding testing of Microfiltration, Ultrafiltration, Nanofiltration and Reverse Osmosis for acid and caustics. SEi is a leading designer and manufacturer of prototypes to test fluid and separation techniques. Our reputation for design and quality have caught the eye of many Fortune 500 and Fortune 100 companies that have contracted with us to create solutions for their needs.