I just got the e-flow about a week ago as part of the Aztreanam study. I do love it! Any of you that have one out there please help or offer advice. The study guidelines say to clean it after every use with soap and water and then once a week with the solution they give you. Every once in a while when I do a treatment the mist icon will come on and the tretment will go for about 20 seconds and then stop misting even though the mist icon then will stay on for another 15 or 20 seconds before I get the thumbs up. I am doing my very best to clean this thing. I don't want to waste the med and find out that the thing is not clean enough cuz the med goes to waste when that happens. Do you think I could test it with some HS or something less valuable like IV saline! The study says not to use ANYTHING in the neb besides AL. Please help! I am really interested in hearing from people who are a part of the AL study.