Standard COT

Standard COT, according to ISO/CEN EN1484, 1000 mg/L±25 mg/L (Potassium Phthalate Monobasic), stabilized with 100 ppm ZnSO₄

Standard COT, according to ISO/CEN EN1484, 100 mg/L±5 mg/L (Potassium Phthalate Monobasic), stabilized with 100 ppm ZnSO₄

Standard COT, 25 mg/L±2 mg/L (Potassium Phthalate Monobasic), stabilized with 100 ppm ZnSO₄

Standard COT, according to ISO/CEN EN1484, 500 mg/L±10 mg/L (Potassium Phthalate Monobasic), stabilized with 100 ppm ZnSO₄

Standard COT, according to ISO/CEN EN1484, 50 mg/L±2 mg/L (Potassium Phthalate Monobasic), stabilized with 100 ppm ZnSO₄

Standard COT, according to ISO/CEN EN1484, 250 mg/L±5 mg/L (Potassium Phthalate Monobasic), stabilized with 100 ppm ZnSO₄