Glossary & Terminology
- Absolute filter rating
- Refers to the smallest particle size that a filter will trap 100 percent. For example, a 5-micron absolute filter will trap all particles 5 microns and larger. See nominal filter rating.
- The process by which filters hold or trap particles and chemicals by absorbing them. Picture a sponge.
Carbon that has been specially treated to enhance its ability to trap certain chemicals.
- The process by which carbon filters trap chemicals by holding them on the surface. Picture a magnet holding something on the surface.
- The process of exposing water to large amounts of oxygen in order to remove certain kinds of chemicals.
- Aggressive water
- Water that, because of its purity, aggressively reacts (chemically) with materials.
- A negatively charged ion. See also Cation.
A naturally occurring underground reservoir.
Backwashing, back flushing
Reversing the flow of water through a filter in order to cleanse it of accumulated particulate matter.
Cellulose acetate membrane. A type of membrane used in reverse osmosis.