AC Analytical Controls® is the recognized leader in specialty chromatography analyzer solutions for petroleum, petrochemical and refinery, gas, and natural gas analysis markets. Our analytical innovations have defined instrumentation standards since 1981 across the entire spectrum of hydrocarbon-based product streams, including gasoline, naphtha, crude oil, residues, and various gaseous products such as natural gas and liquefied petroleum gas (LPG). AC solutions are widely recognized in the industry with applications, including: Reformulyzer® a popular gas chromatography (GC) solution that incorporates multiple international standard test methods SIMDIS a suite of SIMDIS capabilities, including the High Temperature SIMDIS, the DHASIMDIS Crude Oil Software merge principle, and the CNS SIMDIS for Crude Oil HiSpeed RGA a high-speed solution that determines and reports the composition of refinery gas streams in minutes DHA a unique combi system that accommodates the analysis of both light petroleum streams and the light end in crude oil AC solutions meet requirements of specific testing applications that are globally approved by ASTM, CEN, DIN, ISO, and other standardization organizations.