Please Explain This Demonstration By A Filter Company
A girl came to my house today, and gave me a demonstration on water quality. Her demonstration was pretty convincing, but I still can't be sold on anything until I do my own poking around first.
She produced three glasses and began filling them with water from different sources. One glass was filled with water she had brought (which was apparently water filtered by her company), the second with water from a generic brand of bottling company, and the other filled with our current tap water.
She then used a "ppm meter", and placed it in all three glasses, seperately. Our tap watered registered around 130ppm. The bottled watered registered 800+ppm, and their filtered water registered around 10-15ppm. She explained the reason their water even rigistered any ppm reading was due to the fact that their filters completely cleans the water to 0ppm, and then adds vital/healthy nutrients to the water supply.
THEN, she pulls out a device with four prongs, that plugged into the wall (two prongs on one side, and two prongs on the other). She took two glasses, side by side, and placed two prongs in each glass (as a comparison). Their water bubbled very little, while our tap water bubbled a considerable amount more. After about 30 seconds, their glass of water stayed unchanged while the glass of our tap water went from yellow, to dark brown with a thick, green, foamy film at the top.
She explained that this deviced was removing the chlorine from the water, and leaving us with the water in the state it was in before chlorine was added. In essence, she was trying to convey that the water, in bottle of water, starts off looking like disgusting swamp water, chlorine is added, and it ends up looking clear and drinkable.
Now, I can't remember precisely what she said, but I think the device she put into the glasses of water consisted of an aluminum rod and an iron rod. Either way, when she left, I was left wondering:
What is this process called? Why did it make my water disgusting? Would it still be drinkable? Was it even possible for this device to remove chlorine?
Does anyone have any insight or thoughs about this demonstration? I'm very, very curious about what was exactly happening here.
Any comments would be greatly appreciated.
Thank you all for your time.