Xylose is a monosaccharide which can be found in wood. Xylitol is a sugar-like, open chain polyalcohol. Xylitol and xylose were separated on the Primesep S HILIC/mixed-mode column. Both compounds are retained by a single HILIC mechanism. This method is compatible with ELSD, CAD, and RI detection and can be used for analysis of various monosaccharides in complex mixtures.