An aqueous disinfectant solution comprising peroxyacetic acid and a surfactant such as a polyoxyethylene alkyl ether phosphate (polyethylene glycol p (1 1 3 3 tetramethylbutyl) phenyl ether) or cocoamidopropylamino oxide.. The solution is preferably adjusted to provide a pH in the range 5 8 by a pH adjusting agent such as a phosphate buffer hydroxide carbonate bicarbonate a combination of carbonate and hydroxide or a combination of carbonate and bi carbonate.
