BS EN ISO 7393-3:2000 Water quality. Determination of free chlorine and total chlorine. Iodometric titration method for the determination of total chlorine
1990BS EN ISO 7393-3:2000 Water quality. Determination of free chlorine and total chlorine. Iodometric titration method for the determination of total chlorine
1990BS EN ISO 7393-3:1990 Water quality. Determination of free chlorine and total chlorine. Iodometric titration method for the determination of total chlorine