Levine Leichtman Capital Partners, a Los Angeles-based private equity firm, has acquired NSL Analytical Services in partnership with management. Terms of the deal were not disclosed.

NSL is a materials testing provider serving a diverse client base across highly regulated and technologically advanced end markets, including aerospace & defense, advanced materials, and electronics, among others. It was founded in 1945 and serves its customers from laboratories located in Cleveland.

“We are thrilled to partner with NSL, a leader in the materials testing and analysis sector,” Matthew Frankel, Managing Partner at LLCP, sais in a statement. “NSL has established itself as a trusted partner for a loyal client base across numerous high-performance industries. We are excited to work with the NSL team to broaden the Company’s testing capabilities and geographic footprint through both organic initiatives and strategic acquisitions.”

“Our new partnership with LLCP will further guide and fuel NSL’s growth in support of the critical quality assurance testing our team delivers to clients world-wide,” NSL CEO Ron Wesel said. “In an ever-increasing technology-driven world, NSL’s material testing capabilities provide the confidence and security demanded by traditional and evolving production methods such as additive manufacturing.”

NSL is the sixth platform investment of LLCP Lower Middle Market III, L.P.