The mixture rule states that any mixture of a listed hazardous waste and a non-hazardous waste remains regulated as a hazardous waste. Mixtures of characteristic wastes and non-hazardous waste are regulated as hazardous waste if the resultant mixture continues to exhibit the characteristic.
1 Wash the cannula in soapy water and rinse it with a solution of 10 parts water and one part vinegar. 2  Rinse thoroughly with hot water and hang to dry.  This connects the nasal cannula to the oxygen concentrator. It doesnât need to be cleaned, but plan to replace it every 6 to 12 months advises the ATS.
1 Drain your spa water every 3 to 4 months, depending on use. If your spa has an ozonator, changing your spa water may only be necessary every 8 - 12 months.  Add 1/2 cup bleach to 3 gallons of water and sponge clean your spa shell. Rinse with fresh water and dry spa with large towels.