https://www.youtube.com/watch?v=wJkHKsC6670
Thanks ben M
Not really anything in the video that isn't in the brochure though. Just words really (most of which were "machines", delivered in a flawless boycie impression), I'd rather see a side by side PPM v PPB comparison on dirty glass.
A worrying point brought up in the video, then expertly glossed over by boycie, the Ionics rep, is that there isn't really any feasible way of measuring water to PPB. In my mind that kind of renders the whole exercise pointless.