TY - JOUR T1 - Colorimetric Determination of Urea in Wine JF - American Journal of Enology and Viticulture JO - Am J Enol Vitic. SP - 143 LP - 144 DO - 10.5344/ajev.1989.40.2.143 VL - 40 IS - 2 AU - C. W. Nagel AU - K. M. Weller Y1 - 1989/01/01 UR - http://www.ajevonline.org/content/40/2/143.abstract N2 - A colorimetric method for the analysis of urea in wine and juices, capable of accurately estimating the urea content at concentrations as low as 1 mg/L, is described. Nitrogen compounds other than carbamido compounds do not interfere with the reaction. ER -