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Ion Chromatography

Ion Chromatography (IC), a hybrid method, is a preferred method for the determination of inorganic and organic ions. Direct aqueous dissolution provides for assay detection limits of ppm to the percent range. For compounds that require conversion of organically bound elements, the detection limit is 0.05% or lower. Proprietary techniques and the use of Dionex Instrumentation make it possible to analyze ion concentrations from ppb to the percent range without the chemical interferences that are normally associated with titrimetric and photometric assays.

Robertson Microlit has recently updated its ion chromatography capabilities with the addition of the Thermo Scientific Dionex ICS-5000+ HPIC System. Thermo Scientific Dionex has led the industry for over 30 years, with instruments and solutions that represent state-of-the-art technological advancements and patented technologies. They’ve achieved best-in-class resolution, speed, and sensitivity optimized for ion chromatographic methods. This instrumentation ensures exceptional control and reproducibility for both isocratic and gradient separations, and provides fast, sensitive separations without sacrificing resolution. Whether using our general in-house method, or implementing customer-supplied methods and procedures, we have the capability to optimize peak resolution with a choice of isocratic and electrolytic gradient separations to achieve your most demanding analytical objectives.

Robertson Microlit has also updated its system to accommodate cations. Standard ions routinely analyzed at RML consist of SO4¯, Cl¯, Br¯, AcO¯, TFA ¯, I¯, PO4 ¯. Other ions are available but require a discussion with our chromatography specialist.

When requesting ion chromatography analysis, please use our RML Analysis Request Form.