In business since 1945, NSL is an ISO/IEC 17025, Nadcap certified, ASME NQA-1, 10 CFR 50 Appendix B (Nuclear) Certified Indep ... endent Commercial Testing Laboratory providing reliable and cost effective materials testing to customers throughout the United States and around the world. Our staff of experienced chemists, metallurgists, and technicians are experts in testing metals, alloys, plastics, composites, and ceramic materials whether in powdered, solid, or liquid state. NSL Analytical is located at 4450 Cranwood Parkway in Warrensville Heights, Ohio - a suburb of Cleveland. The 31,000 square foot facility houses our administrative offices, customer service, polymer, elemental chemical analysis and composite materials testing laboratory. NSL Metallurgical is located at 4535 Renaissance Parkway in Cleveland, Ohio 44128. This 12,000 square foot facility houses our metallurgical, microscopy and cellular analysis labs. read more