Glossary & Terminology
Parts per million. A measure of the amount of a substance in water. Equivalent to milligrams per liter (mg/l).
- Pre/post filter
A secondary filter attached either before the main filter, to prevent particulate matter from entering the main filter; or after, for final “polishing” of water exiting the main filter.
- Recovery rate
The ratio of pure water produced to total water used in the process of reverse osmosis.
A process by which a filter medium is cleansed of accumulated pollutants, such as by reversing the flow of water through it.
The process whereby certain substances cannot pass through a membrane and are drained off.
A specially prepared mineral that is used in de-ionization, softeners, and in some kinds of filters.
- Reverse osmosis (RO)
Processes by which contaminants are rejected by a membrane while pure water is allowed to pass through.
A hard, whitish buildup of mineral deposits on surfaces that contact water, such as the inside of water pipes or the boiling chamber of a distiller. The white stuff you see on shower heads and faucets.