A RCRA hazardous waste is a waste that either appears on one of three lists created by the U.S. Environmental Protection Agency, or, if not on the lists, exhibits one of four characteristics of hazardous waste.
How often should oxygen nasal cannulas be changed? Update: Our supplier recommended we change the cannulas monthly and the tubing every 60-90 days. My father has friends who's suppliers have had different guidelines.
How long should an oxygen sensor last? An oxygen sensor should outlast the vehicle emissions warranty. Manufacturers recommend that the unheated type used from the late 1970s to the 1990s be inspected every 30,000 miles and the heated type used from the early 1980s to the mid 1990s be inspected every 60,000 miles.