A disinfectant formulation that produces chlorine dioxide "in situ." Due to the high concentration of the active ingredient in the product, it is possible to dose a small amount of the product to produce sufficient chlorine dioxide directly in the treated water. A patented process that allows chlorine dioxide to be delivered safely - without additional equipment or manual mixing - directly from the canister. Between pH 5 to 9, BIOXID®630 CI PLUS produces chlorine dioxide directly in the cooling water circuit, with an optimum pH range of 8 to 8.3.