MetriCide 28 Instrument Disinfectant/Sterilizing Liquid is a long-life, 28 day activated 2.5% buffered glutaraldehyde solution which contains surfactants. This solution is recommended for the sterilization and high-level disinfection of heat-sensitive, immersible medical equipment and instruments. It can be used and reused as a sterilant and high-level disinfectant for up to 28 days.