What is electrolysis?

Water is made from two atoms of hydrogen and one atom of oxygen. For a few hundred years, scientists, inventors, and even some high school students have used direct current electricity (the type in batteries) to divide water into hydrogen gas and oxygen gas using a process called electrolysis. 
To split the water molecule using complete electrolysis, water is placed in a jar, metal electrode are inserted on opposite sides of the jar, and a direct current voltage in excess of 750 volts (hydrogen generators use at least 1,500 volts to produce massive amounts of gas) is applied.  The water will split into its two component gasses.  The hydrogen exits the water near the positive pole.  The oxygen exits the water near the negative pole.  Recombining the two gases provides an explosive mixture suitable to fuel an automobile … or even launch a rocket.

RedOx machines use PARTIAL electrolysis. 

RedOx machines do not separate water into the two gases.  RedOx machines use a much lower voltage (safer) which produces a partial splitting of water molecules.  Rather than producing hydrogen gas and oxygen gas, RedOx machines produce hydrogen ions and hydroxyl ions.  These hydroxyl ions remain in the water for up to three days instead of automatically floating up and away as the gasses do.
Hydroxyl ions naturally occur wherever there is sunlight and water, without electricity.  Hydroxyl ions are formed in the atmosphere when the ultraviolet-c portion of sunlight strips one of the hydrogen atoms from millions of water molecules.  The split water molecules form hydroxyl ions (–OH) while the hydrogen ions (H) are absorbed by other water molecules to form hydrogen peroxide (H2O2).  These atmospheric hydroxyl ions and hydrogen peroxide molecules help purify the air.  Both hydroxyl ions and hydrogen peroxide molecules destroy atmospheric bacteria, viruses, and molds.  The hydroxyl ions also clean the air of volatile organic compounds such as acetone, MEK, gasoline fumes, and dozens of other byproducts of the industrial age by donating a spare electron which changes the electrical charge of the chemical.  After doing their work, the hydrogen peroxide molecules and hydroxyl ions return to their original state … water.  

Hydroxyl ions occur naturally in plants. 

When a photon of light strikes a molecule of water inside the leaf of a plant, the water splits into hydrogen ions (H) and hydroxyl ions (-OH), just like in the atmosphere.  However, in plants the hydrogen ion (H) combines with the carbon (C), from the carbon dioxide which the plant breathes, to form hydrocarbons, or plant material.  The hydroxyl ions are used to defend the plant against diseases like bacteria, fungus, and viruses.  These same hydroxyl ions also defend humans against bacteria, fungus, and viruses. 
The hydroxyl ions in plants only last for a few days, which is why orange juice from freshly picked oranges (picked within three days) causes a “tingle” on the tongue that older oranges and store bought orange juice does not.  The hydroxyl ions formed in the fresh orange on a tree are also formed in a RedOx machine.  The water from a RedOx machine will produce a “tingle” on the tongue similar to fresh squeezed orange juice. 
Of course RedOx water does not have the big orange juice flavor, nor the vitamin c, flavenoids, and other nutrients.  So drink your fresh squeezed orange juice every morning, for those few months when freshly picked oranges are available), and supplement that “tingle” on the tongue with water from your own RedOx machine … all day long … all year long.
Caveat: Some authors confuse hydroxyl ions (-OH) with hydroxyl radicals  (OH).   Hydroxyl radicals are more commonly called free radicals.  Hydroxyl radicals (free radicals) are considered one of the primary causes of aging.  Hydroxyl radicals (free radicals) damage healthy cells by stealing electrons which weakens the cell and sometimes actually kills the cell.  In contrast, hydroxyl ions heal damaged cells, and neutralize hydroxyl radicals, by donating electrons.  One of the most abundant and readily available sources of hydroxyl ions is RedOx water.