Founded in 1970, Technical Safety Services has expanded to become the largest provider of cleanroom and containment device testing, certification and validation services in the world. Headquartered in Berkeley, California, TSS currently maintains regional operations throughout the United States. TSS employs the largest staff of NSF accredited technicians in America. We've built our business by ensuring that each of our regional offices has the support and training they need to maintain our exacting standards of quality and service - standards our clients count on. For consistent, convenient, quality service, TSS is your only choice. Contact our nearest regional office today to discuss your specific needs and to schedule services.