@scoop Sue, my Pulmonologist was very precise on me getting only the Pari Vios LC reusable nebulizer. I use 7% hypertonic saline twice a day. It’s been effective. My complaint is it takes a solid 15 min each treatment,with about one ml left as I know is OK. I could go longer I’m sure.I’d love to cut that back to eight minutes. Do you what is different about these cups that expedite everything so much ? I’m a rule follower by nature but wide open to hearing of more efficient options too. Thank you, Jeanne