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Not a good way to test using the float method. Even though it would show that there is "stuff" left you should discard after the number of puffs written on the label. In my case I usually get right at 24 days when my 200 are up. I have never had an mdi not spray afterwards, but I prefer to get my med rather than propellant.
CoffeeRTC, BSN, RN
3,734 Posts
How many puffs do you get out of an albuterol inhaler?