The AISTRO in-line cartridge is an ion exchange filter, water softener, calcium and magnesium ion desalination filter that helps replace sodium and chemically achieves a reduction in water hardness.

Water contains high levels of calcium and magnesium metals that cause water hardness. As a result, stains form on various kitchen tools and appliances, increasing energy usage. The desalination filter is designed to prevent the discharge of the load from the cartridge.