Anti-Limescale Water Softening Filter Cartridge for our full range of Professional Heavy Duty Steam Ironing Presses by • Replacement water filter cartridge for the Professional Heavy Duty Steam Ironing Press range. • Extend the lifetime of your HD ironing press and its steam function. Anti-scale water softening filter cartridge for the full range of our Professional Heavy Duty Steam Ironing Presses by : 71HD-White Professional Heavy Duty Steam Ironing Press 65cm 71HD-Silver Professional Heavy Duty Steam Ironing Press 65cm 81HD-White Professional Heavy Duty Steam Ironing Press 81cm 81HD-Silver Professional Heavy Duty Steam Ironing Press 81cm 91HD-White Professional Heavy Duty Steam Ironing Press 91cm 91HD-Silver Professional Heavy Duty Steam Ironing Press 91cm 101HD-White Professional Heavy Duty Steam Ironing Press 101cm 101HD-Silver Professional Heavy Duty Steam Ironing Press 101cm Unique anti-scale filter to extend lifetime of machine and steam function. Thanks to the cartridge, you can use tap water. It is very easy to replace the water filter cartridge. Filters should be replaced regularly (every 6-12 months, depending on the frequency of use of the press); the resin will turn purple when expired. The crystals come inside the cartridge, ready to just pop into your press cleaner. The cartridge filters your water and corrects its pH so that it is almost neutral. The use of these anti-scale filters avoids the scaling of the steam generator. The replacement period will depend on water hardness and amount of steam used. Your press will indicate when the cartridge needs to be replaced. We advise you to replace your filter cartridge when the colour change of the resin to purple reaches approx. 0.5cm from the top edge of the cartridge. For models: 71HD-White, 71HD-Silver, 81HD-White, 81HD-Silver, 91HD-White, 91HD-Silver, 101HD-White and 101HD-Silver. The Ironing Press Company - Europe's leading supplier of Ironing Presses, Sewing Machines and Accessories since 1977.