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The AISTRO In-line Softener cartridge (AISTRO, AISTRO-L-AQ and AISTRO-QC) suitable for POU (Point of Use) installations. Through its double media consisted of ion exchange-based resins, AISTRO cartridges effectively reduce water hardness (high concentration of calcium and magnesium ions). In case your feed water contains a high concentration of suspended matter, AISTRO is commonly preceded by a Sediment filter to avoid a detriment of the cartridge performance. AISTRO fits most 1/4” water lines and requires no additional tools for its installation.