soil111
I finally gather all the stuff and did a ear insufflation 1/16 L/m for 2 min. just try it. two things I notice, first the noise is annoying. I remember somebody in this forum talked about it before, I think just have to get use to it. the second thing is even I only do 2 min, right now if I stick my finger inside even the out ear, my finger smell a strong ozone.
Thanks ozoneman and other great guys here.