Peracetic acid is an oxidising biocide with very rapid biocidal action at ambient or cold temperatures at relatively low concentrations. It has broad spectrum activity and is effective over a wide range of conditions. The activity of peracetic acid is relatively unaffected by organic contamination compared to some other oxidising biocides. Additionally it is very effective against biofilms and microbial slime and has therefore been the product of choice in Clean-In-Place (CIP) applications for many years.