63 巻 (1955) 712 号 p. 420-421
The sulphate content of cements was determined by an anion exchange resin method. The sulphate ion was converted to chloride ion using Amberlite IRA-400. The chloride ion was titrated by the potentiometry. The results agreed with the results of the barium sulphate method, and were obtained in 2 or 3 hours.