Directions for use
Half fill kettle with water and boil (do not overfill). Unplug and place in empty sink. Slowly add 1 sachet. Leave for 10 minues. Use 2 sachets for heavy scale.
If any limescale remains, reheat solution until it fizzes (DO NOT boil as this may cause overflow).
Pour solution away, rinse kettle with cold water, boil again with clean water and rinse once more.