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GPS Air uses multiple data points to formulate performance validation statements. GPS Air technology is used in a wide range of applications across diverse environmental conditions. Since locations will vary, clients should evaluate their individual application and environmental conditions when making an assessment regarding the technology’s potential benefits. The GPS Air products have not been evaluated by the FDA as medical devices and, therefore, are not intended to treat, cure, or prevent infections or diseases caused by certain viruses or bacteria.

The use of this technology is not intended to take the place of reasonable precautions to prevent the transmission of disease. It is important to comply with all applicable public health laws and guidelines issued by federal, state, and local governments and health authorities as well as official guidance published by the Centers for Disease Control and Prevention (CDC), including but not limited to social distancing, hand hygiene, cough etiquette, and the use of face masks.


For microorganism specimen testing (viruses and bacteria) the GPS NPBI technology was tested by Innovative BioAnalysis in a 20 foot wide by 8 foot high by 8 foot deep chamber with a temperature range between 69 degrees and 77 degrees Fahrenheit and a relative humidity range between 42% and 52%. The technology was used in conjunction with an air handling unit designed to create and sustain achievable ion density levels that have been observed in real world applications. Mixing fans were used to disperse the ions and suspend the test specimen within the chamber. The technology may perform differently where the area in the room or building does not provide suitable air flow. Suitable air flow is critical as ions can only travel to where the air pushes them. Significant variations in temperature or humidity of the space may also affect performance. Testing the reduction rate of any virus or bacteria with the GPS NPBI technology is an evolving process and additional testing will continue in the future. Tests conducted in the same manner with attention to all experimental variables should come within a margin of error of the results stated above.


Clean Air Delivery Rate (CADR) and Air Changes per Hour (ACH) are widely used and generally understood metrics to evaluate the effectiveness of air cleaning devices. CADR and ACH can be calculated by applying the Air Cleaner Efficacy Investigation Tool (ACE IT), a spreadsheet application designed to calculate and translate air cleaner performance data. ACE IT provides methods for the user to input test data and convert the information into an equivalent CADR and equivalent ACH for the size of the chamber used for tests. The tool is available as a free download from the Portland State Healthy Buildings website at