Source: Knorr-Bremse announcement

WESTMINSTER, Md. – As riders begin to return to public transportation, a new round of efficacy tests – focused on reduced contact times – conducted by Knorr Brake Company on its 3-Stage Air Filtration & Purification System for rail vehicles shows the antimicrobial system is 99.9-percent effective in removing even the most difficult-to-eradicate contagions after just 1 minute.

The testing demonstrated even higher efficacy rates against more easily inactivated viruses and bacteria and against all categories of aerosolized viruses after 3 and 5 minutes of contact time. This second set of testing once again reinforces the patent-pending system’s power as the only proven three-stage solution in the market today.

This testing provides a strong body of evidence that the system helps to safeguard passengers and operations personnel from potential exposure to a broad spectrum of viruses, bacteria, and hazardous airborne particulates, including COVID-19 and its variants. As such, the system supports healthy air quality for all rail vehicle passengers and personnel.

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Knorr Brake Company (KBC) launched its air filtration system in North America in June 2020 as an engineered filtration and purification solution for use with rail vehicle HVAC systems. A subsidiary of Munich, Germany-based Knorr-Bremse, Knorr Brake Company manufactures braking systems, passenger doors, and climate-control equipment for all types of passenger rail customers. Knorr-Bremse is the global market leader for braking and other systems for rail and commercial vehicles.

Certified Lab Results Confirm Effectiveness

KBC’s patent-pending comprehensive 3-Stage system guards against the spread of contagion by continuously cleansing the recirculated air during train operation. Configured by Merak North America, a division of KBC, it is the only such system of its kind with certified independent laboratory results demonstrating its performance and effectivity.

As with previous laboratory tests of the 3-Stage system, conducted in August 2020, the shorter contact time aerosol tests – completed in February 2021 – were performed by Microchem Laboratory, an independent, certified ISO 17025 accredited laboratory located in Round Rock, Texas.

The U.S. Environmental Protection Agency (EPA) requires that any device claiming viral and bacterial removal efficacy must have documentation and records evidencing the mandatory testing undertaken. The engineering teams at KBC have worked closely with the EPA in the development of the 3-Stage system to ensure thorough and complete testing prior to and after the system’s release.

To view the entire announcement, click HERE.