Oxycon DES (Start, DPD 1a & 1b, GL, each 1x 45ml) Reagent kit for 200 selective determinations of free chlorine, chlorine dioxide, bromine and iodine Specifications 1x Oxycon Start 1x Oxycon DPD 1a+1b 1x Oxycon GL Contact us to place an order. Related Products NH4/NO3 standard solution 1000ppm Reagent set Oxycon Online KI, 8 sets Calibration solution pH9 Calibration solution pH4