Cemak
Cemak is a powerful, concentrated concrete cleaner. Penetrates quickly saving time and labour. Economical - dilutes up to 1:25. Increases surface porosity. Not a fire hazard. Safe to use in any area with good ventilation. Allows maximum adhesion of surface coating. Contains a brightening agent to bring the treated surface to a "new" condition. Eliminates the need for scraping or scarifying. Biodegradable - does not harm the environment as it continues to break down in water.