PAC is the leading manufacturer of advanced analytical instruments for gas chromatography, elemental analysis, physical properties, and fuels composition. Our portfolio includes the world’s most respected brands of lab and process analyzers: AC Analytical Controls, Advanced Sensors, Alcor, Antek, Cambridge Viscosity, Herzog, ISL, PetroSpec and Phase Technology. PAC complies with ISO 9001-2015 and 17025-2017 standards.