With a 1 minute broad-spectrum contact time, OPTIM 1 is one of the fastest and most effective cleaner & intermediate level disinfectants. It is listed as a category IV, the EPA’s lowest toxicity category. OPTIM 1 provides the confidence that you are compliant and protecting your patients, staff, equipment and the environment without compromise; the perfect balance. EPA Number: 74559-9 EPA List N: Approved Shelf Life: 1095 days