A subsidiary of Roper Industries, PAC is an international manufacturing and service organization with a diverse catalog of more than 250 petroleum, petrochemical, food and beverage and pharmaceutical analysis solutions. It provides advanced testing equipment for a variety of applications, including total nitrogen and sulfur, chromatographic detectors, water content, viscosity, volatility and cold flow properties. With the convenience of worldwide distribution services, PAC stands as one of the leading sources for laboratory and online instrumentation. The company was created in 1999 from the merger of ISL and Varlen Instruments. It has customers on six continents and also operates several subsidiaries, including Alcor, Antek and PetroSpec, among others. Based in Houston, PAC is ISO 9001:2000 certified.