Column, LC, Shodex IC SI-35 4D, Rapid analysis, Suppressed, 3.5um, 4.0 x 150mm. Column designed for the rapid analysis of oxyhalides and general inorganic ions with a suppressor. Functional Group = Quaternary Ammonium. Column is shipped in 3.6mM Na2CO3 Aq. Base material is Polyvinyl Alcohol with PEEK column hardware.