This invention relates to a stabilized aqueous glutaraldehyde solution including 0.005% to 45% m/v, suitably 10% to 45% m/v solution of glutaraldehyde, an alcohol ethoxylate non-ionic surfactant, a buffer and a sufficient amount of a pH modifier to bring the pH of the solution to 6.0 to 8.5. The glutaraldehyde and the alcohol ethoxylate non-ionic surfactant are chemically bound together, suitably by complexing. These stable solutions can be stored for a period of at least six months without the glutaraldehyde polymerizing or the pH dropping below 5.0.