NxPAS ApS
- Analysers
- Carbon Capture, Utilisation and Storage
- Gas Detection
- Hydrogen Application Technology
- Monitoring, Measurement & Verification (MMV)
NxPAS ApS is a Danish technology company developing next-generation laser photoacoustic gas analyzers for industry, energy and research. Founded by a multidisciplinary team of physicists, chemists, engineers and business professionals, NxPAS combines deep expertise in opto-electronics and spectroscopy to bring high-precision gas measurement to new frontiers.
Our instruments are based on photoacoustic spectroscopy (PAS) and TDLS. An infrared laser, such as a quantum cascade laser (QCL), excites the target gas molecules, and the resulting acoustic signal is detected with exceptional sensitivity. This approach enables selective, real-time measurement of a wide range of gases, including CH₄, CO, CO₂, trace H₂O, NOx and sulphur compounds, down to ppb levels and with a high dynamic range. Because the platform works with different lasers, we can also tailor wavelengths to customer-specific measurement targets.
NxPAS analyzers offer a cost-effective alternative to mass spectrometry, with lower maintenance, stable long-term performance from days to months, and traceable metrology for critical applications. Designed for industrial use, they support sampling of process gas streams, continuous operation and fieldbus communication.
Key applications include hydrogen and ammonia Power-to-X, high-purity gas quality control, synthetic and carbon-neutral fuels, carbon capture, utilisation and storage (CCUS), new chemical process R&D, and bio-production process analysis.
Our company is based near Copenhagen, with a well-equipped lab for opto-electronic R&D, instrument assembly, FTIR reference measurements and calibration gas setups. All instruments are designed and made in Denmark.
Our mission: bringing high-quality gas measurement solutions for a cleaner, healthier world.
Address
Buddingevej 306Pelican Industrial Building
Søborg
DK2860
Denmark
Website
https://www.nxpas.com-
Danish gas analysis company NxPAS will exhibit at Hydrogen & Carbon Capture Technology World Expo 2026 in Hamburg, presenting the Nx360 laser-based hydrogen gas analyzer alongside its QCL and infrared ...
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The Nx360 is a laser hydrogen analyzer based on tunable diode laser absorption spectroscopy (TDLAS). It measures H₂ directly in process gas streams, in situ or extractive, with response in [< 2 s], no ..