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.