Preperation and Usage: | Do not use on: acid sensitive surfaces (e.g. gold, silver, copper, aluminium), Coloured or old/damaged enamel, plastic water boilers, natural stone (e.g. marble, travertine), hot/damaged or scratched surfaces and electrical appliances. If in doubt, test on a hidden area before use. Tougher encrustations: leave to act max. 3 min. before rinsing. |