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The first antifouling agents, also called antiscaling agents, to be used were those based on hexametafosfates. These only prevent sodium sulfate scale deposits, while they have proved ineffective against calcium carbonate besides having many stability problems in aqueous solution. Following this type of antifouling agent, those that started to be used were the acrylic polymer-based ones, which are still used at present. The latest-generation antiscaling agents are those based on phosphonates and polyacrylates in stabilized solution; a mixture of them both is the formula used in our product.


The addition of antiscaling solution prevents scaling caused by calcium carbonate, calcium sulfate, barium sulfate and strontium sulfate in the membranes or pipes of water treatment equipment. Phosphonates also prevent calcium fluoride scaling and inhibit iron, aluminium and silicon dioxide (silica) deposits.

Its dosage varies depending on the hardness of the water to be treated and it replaces, in most cases, the cation exchange resin layer in reverse osmosis systems

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