Yep. Well at least a similar unit without the chemicals. It does work, but the water surface must be very still or the contaminated water can splash into the clean distilled water. Perhaps they have found a way around this with these units.

Very low production rate. I think we had 6 to a kit and it would just about make enough for one person. If I were on a life raft in a calm ocean I would like to have several because they are better than nothing. I have no idea about the chemical additive.