Guides for GC310 Steam and Go from Philips

Your appliance has been designed to be used with tap water. In case you live in an area with hard water, fast scale build-up may occur. Therefore, it is recommended to check the water hardness first with the test strip provided (For specific types only). Immerse all the squares on the test strip in tap water for 1 second. Shake off excess water for 60 seconds. Check how many squares have changed color and refer to the following table for water recommendation. Do not consider color changes on a minor part of a square or colors that change after 3 minutes....