Powdered scale remover for heating or cooling systems & sanitary installations with steel or aluminium pipes or surfaces. - Used particularly for cleaning heat exchangers. - Can also be used on copper, cast iron & stainless steel. - When used the powder is mixed with water in a ratio of approx. 8:1 & then add in to the system. - The liquid is pink & when it stays pink in the system it means that the scale removal has occurred. - The system should then washed out with a neutral product. - 5 litre containers also available.