Retlif Testing Laboratories

Retlif Testing Laboratories was founded in 1978 and is headquartered in Ronkonkoma, New York. It describes itself as 100% independent, 100% American-owned and 100% family-owned. Retlif was the first laboratory to petition the U.S. Government (NIST) to develop an EMI laboratory accreditation program.

The company operates three Secret Level testing facilities in Ronkonkoma (NY), Goffstown (NH) and Harleysville (PA). EMI/EMC testing at all three sites, and environmental and mechanical simulation testing at Ronkonkoma, is accredited by the ANSI National Accreditation Board (ANAB) to ISO/IEC 17025. Retlif also holds recognitions or listings with the American Bureau of Shipping, Lloyd's Register, the U.S. Coast Guard, the FCC, ISED Canada, VCCI, iNARTE and the Defense Logistics Agency. In 2026 it acquired a 20,000-square-foot facility at 780 Marconi Avenue, Ronkonkoma, across from its headquarters, and it has received a U.S. Navy Maritime Industrial Base grant to enhance its acoustic noise testing capabilities.