Glossary Terms

May 3, 2017

R. O.

Reverse osmosis.
May 3, 2017

rinse

That portion of the regeneration cycle of an ion exchanger in which fresh water is passed through the column to remove spent and excess regenerant, prior […]
May 3, 2017

reverse osmosis (R.O.)

A water treatment process that removes undesirable materials from water by using pressure to force the water molecules through a semi-permeable membrane. This process is called […]
May 3, 2017

reverse deionization

The use of the anion exchange resin ahead of the cation exchange resin (the reverse of the usual order), in a deionization system.
May 3, 2017

resistivity

A capacity for resisting the flow of electricity. (See resistance.)
May 3, 2017

resistance

In water conditioning, the opposition offered by water to the flow of electricity through it; the reciprocal of electrical conductance. The unit of measurement for electrical […]
May 3, 2017

resin cleaner

One of several different chemical compounds used to cleanse ion exchange resin products of dissolved iron, aluminum, and various organics attracted to or bonded to the […]
May 3, 2017

resin

Synthetic organic ion exchange material, such as the high capacity cation exchange resin widely used in water softeners.
May 3, 2017

residual chlorine

Chlorine allowed to remain in a treated water after a specified period of contact time to provide continuing protection throughout a distribution system; the difference between […]