About MSS

Intelligent Sorting Technology

MSS, Inc. designs and manufactures next-generation optical sorting technology for use in the waste and recycling industry.

MSS optical sorting systems are ultra high-speed automated machines that sort up to 40 times faster than a human being. We develop state-of-the-art optical sorting systems that are field-proven to give you the most efficient separation of recyclables available, while providing you with the cost-effective, time-saving technology you need to meet current market demands and take your operation into the future.

MSS, Inc. is a division of CP Group, the world’s leading provider of waste diversion solutions and manufacturer of material recovery facilities.

CP Group is a team of manufacturers and leaders of innovation in the waste and recycling industry. CP Group—comprised of CP Manufacturing, Krause Manufacturing, MSS, Inc., and Advanced MRF—provides a variety of sort solutions worldwide, including MRF manufacturing, retrofits, audits, consulting, and engineering services. Custom turn-key systems are designed, installed, and serviced by CP Group for residential recycling, commercial and industrial, municipal solid waste, engineered fuel, construction and demolition, and electronic waste processing.

Made in USAAll of our high-efficiency solutions for plastics, paper, beverage cartons, glass, metals, and e-scrap recycling facilities are designed and built in the USA.


Vision, Mission, and Values of CP Group

We love what we do because we believe our work has a positive impact on our world and environment. We are dedicated to making the world more sustainable, and this commitment is reflected in the vision, mission, and values of our company.


Our Vision

To create a clean and sustainable world for the generations that follow us.


Our Mission

We commit to global sustainability by providing the best waste diversion solutions through innovation, education, and integrity.


Our Values

Our values are simple. We respect each other, and we respect the planet:




MSS-40-year3-lrMSS began in 1974 to develop separation processes for ferrous and non-ferrous metals. The initial development began in 1969 at Vanderbilt University in Nashville TN. The Sorter Project combined the efforts of over 50 scientists and engineers from the University together with recycling experts from industry.

Within two years MSS placed the first commercial eddy-current separator, (PULSORT™) for recovery of aluminum containers from municipal waste including an innovative feed system for uniform feeding in a U.S. in operation. Following this installation at the Teledyne National facility in Maryland, MSS placed two more PULSORT™ systems at the Americology facility in Wisconsin.

MSS Historic History

  • In 1978 MSS placed its first DICUS™ high-intensity magnetic separation process in the secondary titanium-superalloy industry. Since that time, numerous DICUS™ installations have been installed for a variety of separation applications.
  • In 1979 MSS developed the ELPAC™ system which combined sophisticated metal detection with a unique air jet removal process. The ELPAC™ system has been proven successful in a wide variety of separation applications since its initial development. The ELPAC™ system is a featured U.S Office of Industrial Technology invention Success Story. The ELPAC™ has proven successful in the removal of aluminum from cleaned plastic flake. Over 50 ELPAC™ units around the world operate in this application.
  • In 1980 MSS developed a unique processing system for materials recovery from municipal solid waste which did not require shredding, air classification, or bulk screening. The process utilized the Rotary Material Separator, ELPAC™ and PULSORT™ systems combined with a newly developed mechanical drum separator.
  • In 1991 MSS developed the BottleSort® system, an automated system to debale, singulate and sort post consumer plastic containers. This system has the capability to sort a mixed plastic container feed stream into individual polymers and colors, specifically, PVC, colored PET, clear PET, natural HDPE, polypropylene, mixed color HDPE and color-sorted HDPE. The system design included the development of a near-infrared (NIR) sensor for identification of plastic resin types, development of a machine vision system for color identification and the development of an x-ray based sensor for identification of PVC plastic bottles.
  • In 1992 MSS developed the ELKE™, an optical system for separation of ceramic contaminates from glass cullet.
  • In 1993 MSS developed the VYDAR™, the world’s first system for removal of PVC from PET in the flake form.
  • In 1994 MSS developed the Glass ColorSort™ to sort glass cullet by color.
  • In 1995 MSS developed the Binary BottleSort system to sort non-singulated plastic bottles by resin and color type.In 1998 MSS introduced the CartonSort™ and PlasticSort™ optical sorters, both NIR-based sorting systems for identification and separation of plastic containers and beverage cartons from mixed recyclables.
  • In 1999 MSS introduced the world’s first commercially available automated optical paper sorting equipment, the PaperSort™ system. Not only did it feature brand-new LED sensing technology (MultiGrade™) with higher scan rates than anything available on the market at the time, but also patented material handling technology that allows for paper to be sorted at speeds previously not thought possible (up to 1500FPM or 6 meters/second).
  • In 2001 MSS introduced the Aladdin™ optical sorter, an all-in-one NIR and color sorting module for sorting of plastic bottles by type and color from commingled container streams. It has been the most successful optical sorter MSS has ever built. It also features the dual-eject option for the first time, which allows the operator to generated 3 output fractions from 1 input fraction.MSS History
  • In 2001 MSS introduced the Sapphire™ optical sorter, the successor model of the CartonSort™ and PlasticSort™ separators.
  • In 2002 MSS introduced the FiberSort™ optical sorter, featuring a combined NIR and color sensor to sort brown cardboard (out-throws) and non-fiber items (prohibitives) from mixed paper streams.
  • In 2003 MSS introduced the MetalSort™ induction-based metal detector, the successor of the ELPAC™ metal sorting technology that allows for the identification and separation of ferrous, non-ferrous and stainless steel metals.
  • In 2005 MSS introduced the MultiWave™ optical sorter, an LED-based NIR and color sensing technology for the sorting of cardboard (brown and printed) as well as non-fiber contaminants from newspaper and mixed paper streams. Besides the standard NIR and color sensors, the MultiWave™ also included a world’s first gloss and lignin sensor.
  • In 2006 MSS introduced the e-Sort™, an optical sorter specifically designed to sort electronic scrap into the different categories (printed circuit boards, copper, non-ferrous metals, ABS, HIPS, PC, PC-ABS, etc.).
  • In 2010 MSS introduced the L-VIS™ optical sorter, a high-resolution color sorter for small particles, based on camera identification technology. The applications range from shredded electronics scrap to plastic flakes, pellets, and granules.
  • In 2011 MSS introduced the CIRRUS™ optical separator, the successor model of the e-Sort™.
  • In 2016, the L-VIS™ is reintroduced with ColorMask™ and WireHawk™ technologies.
    In 2017, the next generation of CIRRUS® optical sorting technology is released: FiberMax™, PlasticMax™, PurePlasticMax™, and eMax™. All units are equipped with MaxSelect™ Capability, as well as ClearLight™ Technology, ensuring the highest throughput and the purest end-product ever achieved by optical sorters in the waste management industry.

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