抄録
Algorithm for measurement of urea concentration and ratio of solvent using pH and conductivity in aqueous solution of urea with NH4Cl was proposed. Temperature characteristics of pH and conductivity in the solution of urea concentration 200, 220, 240 and 260[g urea/100gH2O] and ratio of solvent 2.0, 2.25, 2.5, 2.75 and 3.0[g H2O/g NH4Cl] were investigated. Using their data and algorithm, measurement of urea concentration and ratio of solvent were made with error less than 5%.
