It was the Aktiv Oxygen Ozonator Professional Model 8 on www.therabreath.com under the heading of "oral care accessories."
I'm still learing about ozonators, but this seems to be an inexpensive model. It comes with 2 sets of tubing and 3 stones. One is large/round and the other two are cylindrical and smaller.
I waited until I found a $10 off coupon on the website and used it to get this for $110.
Have you researched quite a bit on ozonators? I just want to know that I'm progressing and not doing any harm or doing something in the wrong way.
It seems to be very adequate for what my husband and I do, which is ozonate a half pitcher of water 2x per day. We each have at least a tall glass of ozonated water morning and night. I will be ozonating oil to use both topically and internally this weekend.
Hope this helps you find an ozonator you like. Let me know what you think.