Suitable for use in the following compendial methods: -APHA 4500-ClO C, Reagent 3, for Chlorine Dioxide via Amperometric Method I -APHA 4500-Cl E, Reagent 3d, for Chlorine (Residual) via Low-Level Amperometric Titration Method -APHA 4500-Cl D, Reagent 3d, for Chlorine (Residual) via Amperometric Titration Method -APHA 4500-Cl C, Reagent 3e, for Chlorine (Residual) via Iodometric Method II -EPA 330.2, Reagent 5.2 for Chlorine, Total Residual -EPA 330.2, Reagent 5.5 for Chlorine, Total Residual -ASTM D1253, Reagent 8.3 for Residual Chlorine