what does it mean when a bottle of water says purified by reverse osmosis?

Question

"purified by reverse osmosis" ? I'm confused on what this means.

Answer 1

Reverse osmosis is a method of filtering that removes particles larger than one micron. That would include nearly all bacteria and viruses but not toxins such as lead or mercury.

Bert

Answer 2

Reverse osmosis is known as hyper-filtration, and is the most thorough type of filtration available. Although water filtration is the most common usage, reverse osmosis is also used to purify other liquids such as ethanol and glycol.

The reverse osmosis water filter can remove particles as small as dissolved ions from the water supply. It stops virtually every contaminant. Typically, there are at least three stages in a reverse osmosis filter. Water is first forced through a small prefilter, which strains out sediment, and then it is passed through a membrane to screen out smaller contaminants. The last phase is a carbon filter. Between these three elements, the reverse osmosis water filter will eliminate a wide variety of contaminants, including minerals, bacteria and viruses, and provide a constant supply of fresh, clean water at low cost.

Answer 3

reverse osmosis is a technique in which the natural osmosis process is hindered and by force the solvent is forced to move from conc. solution to dil. solution through a semi permeable memberane.
this purifies water as impurities can not pass through the memberane whila water can.

Answer 4

If it's in a glass bottle it's okay, but if it's in plastic, the plastic properties infuse with the water, so you drink plastic, especially if it's left in a hot car all day, it's not good for you.

Answer 5

Better than filtration, not as good as distilled for removing impurities from water.

Answer 6

sophisticated subject. check out using bing and yahoo. that will might help!

Answer 7

it's filtered