Filter Testing Systems
Baltimore manufacturing firm comprised of several specialty businesses. Hamilton Associates, Inc. was established in 1951 by two brothers and continues to be family owned and operated; exhibiting the same professional and time-honored principles of its founders. Since 1961 ATI has been the leading designer and manufacturer of specialized test equipment for high efficiency particulate air (HEPA) filters, ultra low penetration air filter (ULPA) media, filter cartridges and respirators used by virtually all government, military and commercial organizations worldwide. ATI is considered a leader in our core technologies of aerosol generation and forward light scattering photometric detection. In addition, ATI is ISO 9001-2008 certified.