Pergam, a multi-national corporation, is a pioneer in laser-based remote gas leak detection — with a wide range of nondestructive testing methods (NDT). Pergam provides cutting-edge inspection service to the natural gas industry with its unique and patented ALMA and SELMA systems. Located near Seattle, WA, our US office is dedicated to the needs of the North American market. Headquartered in Switzerland, our parent company provides gas leak detection services world-wide.