HORIBA IRLAM™ technology receives U.S. EPA approval for measuring NOx emissions in engine and vehicle certification

ANN ARBOR, Mich., March 18, 2025 /PRNewswire/ -- HORIBA, a global leader in measurement and analysis solutions, has received approval from the U.S. Environmental Protection Agency (EPA) for its proprietary Infra-Red Laser Absorption Modulation (IRLAM™^*1) technology to be used as an accepted alternative for measuring NOx emissions in the certification testing of heavy-duty engines and light-duty vehicles.

IRLAM represents a significant advancement in infrared gas analysis, incorporating modern sampling techniques and next-generation computational algorithms to provide highly accurate and reliable measurements. This innovation has enabled HORIBA to develop a range of new measurement systems for both laboratory and on-road applications that are precise, resistant to interference, compact, and highly reliable.

"IRLAM was designed to maximize testing flexibility without compromising data quality," said Darren Andrews, Executive Vice President and General Manager at HORIBA. "Our lineup of IRLAM-based products supports improved vehicle environmental performance and helps the automotive industry reduce emissions, even as electrification advances. By 2030, our product roadmap will expand to include additional gas species and applications."

Extensive internal and published testing data has confirmed IRLAM's significant advantages in NOx measurement, offering improved data quality and potential cost savings through enhanced accuracy, superior wet measurement, minimal interference, lower maintenance costs, and consistent response times.

With the EPA's guidance letter now in place, OEMs have formal approval to use HORIBA's IRLAM-based analyzers for NOx measurement in vehicle and engine certification testing, further supporting industry efforts to meet stringent emissions regulations.

*1: IRLAM™ is a registered trademark or trademark of HORIBA, Ltd. in Japan and other countries.

Related Links
To read the official letter released by the U.S EPA.  CLICK HERE
Find information on HORIBA products for motor exhaust gas analysis using IRLAM.  CLICK HERE

About HORIBA, Ltd.
Founded in 1953, HORIBA has explored a wide range of unique measurement and analysis technologies to meet global customer needs from 47 group companies and local sites spread across 28 countries and regions. Under the corporate motto Joy and Fun, the company has expanded and refined its core technologies to solve society's energy issues of today and tomorrow. Our unique measurement and analysis technologies are valued in various fields of society including the three megatrend business fields of Energy & Environment, Biology & Healthcare and Materials & Semiconductor. For more information on HORIBA, visit https://www.horiba.com/int/company/about-horiba/home/

Media Contact
Jeff Hunter
HORIBA
jeff.hunter@horiba.com
949-299-7467

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SOURCE HORIBA