Use the IGGI refill bottle. Fill it up to 50 ml with water then up to 100 ml with descaler (50-50). Unplug the appliance. Pour the entire bottle into your empty IGGI. Leave the product to work for 40 to 50 minutes before emptying the tank. Rinse your IGGI with water several times. Repeat once a month or every 10 to 15 uses, depending on the hardness of your water.
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