AiroCide PPT photocatalytic air purifiers contain the same NASA-developed technology used in a variety of AiroCide air purifying product lines. In addition to serving the floral and perishable preservation and food safety industry, the technology is has been developed to kill/remove/eliminate airborne pathogenic and non-pathogenic microorganisms in vegetative and spore states (bacteria, mold & fungi, viruses and dust mites), allergens, odors and harmful volatile organic compounds (VOC’s ) in air in a variety of commercial, government, and residential applications including the medical healthcare industry (AiroCide air purifiers are FDA Class II listed medical devices).
A clinical study of the AiroCide PPT photocatalytic air purifying technology was conducted in the Pre-cooler at Esmeralda Farms’ facility in Miami, FL. The data supports the hypothesis that airborne mold and bacteria levels would be lowered after continuous operation of the AiroCide PPT air purifying system. The results show a significant reduction in airborne pathogens just 24 hours. There was an average airborne mold reduction of 95.45% after a 72-hour period and an average airborne bacteria reduction of 73.18% in the same time frame.
The Pre-cooler where the test took place, is approximately 148,500 ft3 in volume The test period consisted of four days of air sampling in November 2004. A baseline air sample was taken in two locations in the Pre-cooler on Tuesday, 11/9/04 without the air purifying units operating. On Wednesday, 11/10/04 all three units were turned on in the Pre-cooler an allowed to run for 24 hours. Active On samples were taken in both locations after 24, 48 and 72 hours of use, on Thursday, 11/11/04; Friday, 11/12/04 and Saturday, 11/13/04. Air samples were taken for comparison in the Main Cooler and Shipping Area.
Air samples were taken with a slit air sampler (similar to the Anderson N6 sampler) on 15 x 100 mm plastic petri dishes. All samples were cultured by Aerotech Laboratories in Phoenix, AZ, and the results were measured in colony forming units (CFU) per cubic meter of air. All agar plates were exposed to 28.3 Urn of air for 3 minutes.
Table 1 below shows airborne mold reduction at two sites inside the Pre-cooler of 90.83% and 99.35% , or an average of 95.45% in 72 hours. A significant reduction was realized in just 24 hours.
Table 2 shows airborne bacteria reduction inside the coolers of 60% and 79.83% , or an average of 73.18% in 72 hours. A significant reduction was realized in just 24 hours.
Copies of tests mentioned in this paper can be obtained by writing KesAir, Research & Development, 3625 Kennesaw N. Ind. Pkwy., Kennesaw, GA 30144.
AiroCide, KesAir & KesAir Technologies, and Air Quality-Improvement are trademarks of KesAir Technologies, LLC
c KesAir Technologies. December, 2004 www.kesair.com www.kesmist.com 800-627-4913