Nexera UC Chiral CCO, 3 Micron, 4.6 x 50 mm The Nexera UC CCO column is a polysaccharide-coated chiral stationary phase produced by a unique process of coating the proven chiral selector, tris-(3,5-di-methylphenyl) carbamoyl cellulose onto high-purity, highperformance silica. Nexera UC CCO columns are similar in selectivity to ChiralPakĀ® OD and can be used for both HPLC and SFC applications.