This paper compares gamma-irradiation sterilized, modified DE Agar with standard non-irradiated D/E-Agar for recovery of organisms and capacity for neutralizing disinfecting agents. The neutralizing capacity was tested using 4 microorganisms (gram positive coccos, gram positive rod) with a wide range of disinfecting agents neutralized by D/E-Agar including aldehydes, phenol, quaternary agents, chlorine compounds, and hydrogen peroxide. The radiation-sterilized medium neutralized each disinfectant as well as the non-irradiated medium and fertility was equal or better on radiation sterilized DE Agar compared with standard D/E-Agar.
