I haven't heard back from my friends that have the machine.
but I had the same questions that you did.
They also had a video I watched with the engineer who invented the machine. It sounded resonable to my non-scientific mind. There is nothing that you hold with this machine, just water and salt (conductor) in the water, with your feet in the tub with the machine.
All this sludge soon appears. Everyone has a little different goup depending on what come out: orange . green, black , sometimes very little, sometimes it looks like fat globules. Does it actually work to remove toxins? I dunno. My friends are REALLY in to this and other methods and to question it too much with them is like doubting their integrity so I kept my questions to a minimum watched the video and stuck my feet in the tub. Sludge came out. I gave them a small donation for their time and they have to buy new plates for the machine every so many uses. It was much cheaper than a doctor. I didn't do it enough times to see if it really made a difference.
> Many colors and objects appear in the water during IonCleanse
> sessions. There is a reaction between the toxins and particles
> in the water, the salt added to the water, the metals in the
> array, and the acidity or alkalinity of the person being bathed.
> All of these combine to produce color, whether or not feet are
> in the water. The basic color produced by these reactions varies
> from one geographic area to another.
> It is important to understand that the water will change color
> even if the unit is operating without feet in the water. The
> basic color change is a result of the reaction between all of
> the variables in the water and the array, as discussed above.
> This color change will vary in accordance with the toxic and
> chemical components of the water and air given a particular
> geographical area.
> This is clearly a disclaimer intended to avoid lawsuits based on
> the fact that the discoloration of the water is not really due
> to "toxins" from the body. Notice the wording in the
> second paragraph "toxic and chemical components of the
> water and air (in a) particular geographical area" . In
> other words the color varies somewhat from one area to another
> depending on what is in the water and air. Not according to what
> toxins may be in your body. I imagine that the "salts"
> you are supposed to put in the water also react with the metal
> of of the electrified plate.
> Notice there is no direct suggestion that the discoloration is
> due to toxins from the body.
> In fact they take care to deny having claimed that.
> Nevertheless elsewhere in the same ad they claim that the color
> of the water "may" indicates which internal organ is
> being cleansed by the footbath. (as though an electric current
> would be organ specific)
> I tend to think its all a hoax.