Linden Capital Partners has announced it has acquired RQM+ Corp. from DFW Capital Partners.

RQM+, based in Monroeville, Pa., is an international provider of regulatory, quality and compliance consulting services for medical device, in-vitro diagnostics and combination product manufacturing companies.

Linden, based in Chicago, is a private equity firm focused exclusively on the healthcare industry. Founded in 2004, the firm pursues acquisition opportunities across the healthcare industry, including services, products and distribution companies, and prefers to make more substantial investments from a dollars perspective.

DFW, based in Teaneck, N.J., focuses on making control investments in lower middle market companies in healthcare and a few other sectors. Founded in 1983, DFW typically invests in companies with revenue of $20 million to $100 million and EBITDA of $3 million to $10 million.

Terms of the sale were not disclosed.