PIP Manual Page 3
The PHI CELL
The PHI CELL Advanced Oxidation Systems is designed to help eliminate sick building
syndrome risks by reducing odors, air pollutants, and cold and virus causing germs
through a patent pending Photohydroionization® (PHI) process. The PHI Cells are
contained within the APS unit. When the APS system is in operation, the PHI Cell uses
an Advanced Oxidation Process to reduce airborne contaminants.
Why use Photohydroionization?
Germicidal UV light rays have been
used for decades by the medical
industry as a method for destroying
micro-organisms (germs, viruses,
bacteria). Germicidal UV light is
effective in reducing airborne micro-
organisms that pass through the light
rays. However, germicidal UV light has
little to no effect on gases, vapors or
odors.
Ozone, on the other hand, is very
effective on gases, vapors and odors.
However, too much ozone can be a
health hazard, and traditional methods
of producing ozone (i.e., corona
discharge) have maintenance problems
and create nitric acid and nitric oxides.
The combination of ozone (O3) and UV
light, in the presence of the PHI catalyst,
creates the Advanced Oxidation
reaction. This patent pending reaction
chamber creates ozone gas and
destroys it within the same chamber.
This process, in combination with the
catalytic target surface of the cell,
produces not only an atmosphere in
which germicidal light can kill micro-
organisms, it also produces super oxide
ions and hydro-peroxides. These
products of Advanced Oxidation further
attack the micro-organisms as well as
significantly reducing odors and VOC’s.
The PHI reaction cell has the added
benefit of producing safe, low levels of
ozone as a by-product of the PHI cell.
This low level ozone further cleanses
the air as it travels through the
ductwork. By engineering the proper
light wavelength and a dual function, no
maintenance PHI Cell, the manufacturer
has effectively designed a system that
will not exceed the recommended
Federal Safety Limits for ozone (0.04
ppm) in an occupied room.
With the PHI CELL, most gases and
odors are abated while micro-organisms
can be reduced by as much as 90%,
and the room will have safe, low ozone
levels no greater than forest air, or air
after a thunderstorm, which gives the
room fresh, clean and odor-free air.
