Absorbate:
Material to be removed from solution.

Absorbent:
Material on which absorption will occur.

Air Gap:
A clear vertical space between the end of the RO drainline
and the flood level rim of the house sanitary drain system
connection point.

Concentrate/Reject:
The portion of water that does not pass through the
membrane and goes to the drain.

Feed Water:
An incoming water source to the RO system.

Flux:
The rate of transfer of fluid, particles, or energy across a
given surface.

GAC:
Granular Activated Carbon is regarded as one of the most
effective water treatment materials in absorbing many types
of soluble organic materials found in water.
Membrane: A thin layer that forms a barrier, selective to the
passage of chemicals.

Permeate:
Portion of the raw source water, which passes through the
membrane. RO system treated water for consumption.

Reverse Osmosis:
The movement of raw source water through a semi-
permeable membrane when pressure is applied to yield
treated water.

Surface Area:
The surface of a material available for absorption to take
place.

(TFC):
Thin membrane bonded to an anisotropic support layer.
Synthetic fabric supports this composite. Thin film offers
highest degree of selectivity, flux, and chemical stability.

Total Dissolved Solids (TDS):
Total amount of dissolved solids/salts in raw/treated

Ultraviolet (UV) Light:
Radiation (Light) having a wavelength between 100-3900
angstroms.

UV Germicidal Light:
UV light that peaks at 2,537 angstrom wavelength and is in a
wavelength that lies between 200-300 nanometers which kills
all disease causing micro organisms.