Lewatit® S 8227 is a food grade, macroporous, weakly acidic cation exchange resin based on a crosslinked polyacrylate. It is bead-shaped and has a special bead size distribution for use in household filter systems and technical drinking water plants. In its hydrogen form Lewatit S 8227 is suitable for the decarbonisation and softening of drinking water, e.g. brewery water treatment, and the use in household filter systems. Since it has a low regenerant requirement, Lewatit S 8227 is particularly economical product for the decarbonisation of drinking water and liquids which are used as food stuffs or in the production of foodstuffs. When using Lewatit S 8227 to treat potable water and the aqueous solutions listed above, special care should be given to the initial cycles of the new resin. For a use in the treatment of potable water in France, a regeneration has to be done, according to the agreement, by only applying solutions of HCl or H2SO4, and for disinfection, only a solution of H2O2 may be used. Their concentrations have to comply with the present recommendations. The auxiliary products have to respect to purity criteria with respect to the below mentioned norms:- HCl: NF EN 939
- H2SO4: NF EN 899
- H2O2: NF EN 902
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