2L invested in DSS in 1998 when the company was on the verge of closure. Under 2L’s ownership, the company’s two business areas were split into independent units, laying the foundation for solid development. 2L expanded ownership to the employees of the companies, who were invited to invest alongside management and 2L. After several years of strong development, both units were sold to two industrial buyers in 2002 and 2013.

DSS

In January 1998, Lars-Erik Houmann Christensen and Lau Kristensen purchased a company in Nakskov, which was named DSS, Danish Separation Systems A/S. The company, originally founded by De Danske Sukkerfabrikker, was on the brink of closure and was owned by Dow Chemical at the time. DSS was a high-tech company that worked on the development, production, and sale of membranes and membrane filtration elements, as well as customer-specific turn-key filtration systems, primarily for the biotech and pharmaceutical industries.

DSS quickly entered a period of good development, and in 2000, DSS Silkeborg A/S was established, which from the start focused specifically on membrane filtration for the dairy sector.

In 2002, Danish Separation Systems A/S was sold to the Swedish company Alfa Laval, where the company now serves as a cornerstone in Alfa Laval's efforts to penetrate the membrane filtration market.

DSS Silkeborg A/S was not included in the transaction with Alfa Laval, and 2L, along with the company’s management, chose to retain and further develop the company.

Since then, DSS Silkeborg A/S underwent significant development and achieved the status of a dominant global player.

DSS Silkeborg A/S was divested in the fall of 2013 when Swedish Tetra Pak acquired the company and integrated it as the central element in the group's business unit for providing membrane filtration solutions to the dairy industry