Since March 2008 this configuration for Fresh Air
incorporates the Ozone-Free UV process. For in-home trials and
other demonstrations, ozone-free in Normal Mode allows customers
to experience the benefits of Fresh Air gradually. Even though
the ozone output of the Low-Ox RCI Cell has always been less
than .05 ppm (very low), some customers found that configuration
overpowering, especially in low humidity conditions.
The following description is from a study conducted by Dr.
James Marsden of Kansas State University documenting the
efficacy of the Ozone-Free RCI Cell.
Fresh Air by EcoQuest – Now a Tri-Mode Device
Fresh Air has three operating modes providing the ultimate
in versatility and efficacy:
1.
Ozone-Free Mode. The fresh Air powers up in the Normal
Mode, which activates two forms of ionization and the Certified
Space Technology RCI Cell which no produces absolutely no
ozone.
2.
Odor Buster Mode. This mode is activated by pressing the
“High Mode” button on the front panel. High Mode activates the
Purification Plate which creates a low-level of ozone based upon
the space the Fresh Air is treating. Coverage area ranges from
250 to 3000 sq ft. When set to the ventilated area (the area in
sq ft which air can reach), the ozone level ranges from .02 to
.04 ppm, which is below the EPA limit and more than two times
below the OSHA limit. This mode provides the clean, fresh smell
like after a rainstorm and is excellent at dealing with odors.
3.
Sanitizer Mode. Activated by pressing the Away Mode
button to treat Unoccupied Space, meaning all humans and pets
should be removed from the area being treated. The Away Mode
generates high levels of ozone, especially in spaces under 1000
sq ft. The output is 125% of the ozone produced at the 3000 sq
ft setting in High Mode. Typical ozone levels achieved are .20
to .25 ppm. By pressing the Away Mode Button once, the timer is
set to 2 hours; a second push of the button will set the timer
for four hours; three will set the timer for six hours; and four
will set the timer for eight hours. This mode is excellent for
clean-up of a room someone has been sick in, or cleanup of
cooking odors, pet odors, biological spills (the polite term for
someone throwing up), paint and other VOC odors, mold and
mildew, and other issues the user may want to treat quickly.
Ozone-Free RCI proven Effective based upon testing by Dr.
James L. Marsden
Dr. James Marsden, Regents Distinguished Professor at
Kansas State University conducted the flowing tests on the new
Ozone-Free RCI Cell:
Evaluation of
EcoQuest Ozone-Free RCI Cell for Reducing Microbiological
Populations on Inoculated Stainless Steel Surfaces
________________________________________________________________
Dr. James L. Marsden
November 12, 2007
Executive Summary
In this study, a
specially designed Ozone-Free RCI cell was evaluated for
reducing microbial populations on inoculated stainless steel
surfaces. Stainless Steel Coupons (6.3 x 1.8 cm- #8 finish) were
inoculated with Staphylococcus aureus and Escherichia coli. The
target inoculum was 6.0 log/cm2. The inoculated coupons were
placed into an environmental chamber (Terra Universal, Anaheim,
CA) and subjected to treatment with a Ozone-Free RCI cell for
periods of 0, 2, 6 and 24 hours. A control experiment was
conducted in which inoculated stainless steel coupons were
placed in the environmental chamber without an RCI cell and held
for 0, 2, 6 and 24 hours. Temperature and Relative humidity
inside the chamber was maintained at 26° C and 50%.,
respectively. Ozone levels were monitored continuously using a
Model 500 Aeroqual monitoring device. Levels of O3 in the test
chamber were less than 0.005 ppm in the test and control trials.
Exposure to the
Ozone-Free RCI Cell for a period of 24 hours resulted in a
reduction of 2.1 log cfu/cm2 for Staphylococcus aureus and 1.7
log cfu/cm2 for Escherichia coli. The reductions at 6 hours were
1.4 log cfu/cm2 for Staphylococcus aureus and 1.1 log cfu/cm2
for Escherichia coli. Reductions after 2 hours were 0.9 log cfu/cm2
for Staphylococcus aureus and 0.7 log cfu/cm2 for Escherichia
coli. In the control experiments, reductions in Staphylococcus
aureus and Escherichia coli were less than 0.02 log cfu/cm2
after 24 hours in the environmental chamber.
The results of this
study demonstrate that the Ozone-Free RCI cell is effective in
reducing Staphylococcus aureus and Escherichia coli populations
on stainless steel surfaces.
These results were comparable to the results achieved in
the peer reviewed and published paper authored by Dr. Marsden et
al using an ozone producing RCI Cell with O3 levels at or below
.02ppm.
FRESH AIR MODELS -
All are same 275 PV/QV
