Measurement of Physicochemical Properties and Certified Reference Material

10001 A Precise Coulometric Titration Method forthe Determination of Purity of Sodium Carbonate.Tang Gaohua,Lin Dawei: 1(2). 1980. pp.142--146.This paper describes the method artd device of precisecoulometric titration at constant current for thedetermination of purity of sodium carbonate. The con-ditions of measurement are stated in detail. By thismethod. the attainable precision is 0.004%. and thetotal uncertainty is 0.005%.