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Designed for use in heating and cooling systems, the Fernox Express range cleans and protects against corrosion and limescale build-up. The Fernox Express format facilitates quick and convenient use – dosing in only 30 seconds without the need to drain down the system. The Fernox Express range uses Barrier Pressure Pack technology and compressed air propellant to expel the product, so the entire range is non-flammable. The propellant (compressed air) is not mixed with the active product, so there is no risk of air ingress into the system, which could accelerate the future risk of corrosion.