For fast, reliable anion eluent preparation, the ready-to-dilute Thermo Scientific™ Dionex™ 0.5M Carbonate Eluent Concentrate will save you time and eliminate potential contamination or preparation error. The 500mL of 0.5M carbonate eluent concentrate is quality checked for ionic contamination, made with only high purity, reagent-grade chemicals and water (18 MO-cm). Use this concentrate in conjunction with the Dionex 0.5M Bicarbonate Eluent Concentrate for custom eluent concentrations.