Novel Gas Measurement Technologies
for Industrial and Scientific Applications

Air quality monitoring • Mobile emission measurements • Low‑power • Robust • Low maintenance

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Two-dimensional volatility basis set mapping expressed as logarithm of effective saturation concentration of organic nitrate (log(C∗ ON) = log(1/Kp,ON)) in a 2D space with log(C∗ ON) on the x axis and O : C ratio of CxHyOzNk (= (z−2k)/x) on the y axis. The val ues of log(C∗ ON) during SAPHIR-CHANEL campaigns for various urban VOC-NOx mixture experiments are shown color-coded by daytime (light blue) and nighttime (dark grey) conditions. The horizontal whiskers represent the uncertainty of log(C∗ ON) (see Sect. S3.3 for uncer tainty propagation). The vertical whiskers represent the uncertainty from using WALL-E signal as an indication of concentration (estimated to be 50%). Organic composition from the group contribution method based on the carbon number (ni C) and oxygen number (ni O) are shown to describe organic aerosol volatility as isopleths at 300 K following Donahue et al. (2011), with parameterizations following Stolzenburg et al. (2018) as described in Sect. 2.5.1. The dark grey lines represent carbon number isopleths and the light green curves represent oxygen number isopleths. The volatility range of semi-volatile organic compounds (SVOC) and intermediate-volatility organic compounds (IVOC) are highlighted red and yellow, respectively.

New Publication featuring our ICAD HONO Analyser

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Airyx Plume Chasing Study Schmidt et al

Airyx Technology Delivers Accurate Real‑Driving Emission Data in Large Fleet Study

A new peer‑reviewed study validates Airyx Plume Chasing as a reliable method for real‑driving emissions of cars, buses and trucks. High‑resolution NOx, PN and BC data were collected from more than 1,400 vehicles, showing that Airyx measurements align closely with scientific reference methods and outperform other remote sensing techniques in accuracy and consistency.
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Airyx WGA020 Wastewater Gas Analyser at IFAT 2026 – Real-Time N₂O, CH₄ and CO₂ Monitoring

Discover the Airyx WGA020 wastewater gas analyser at IFAT 2026. See real‑time N₂O, CH₄, CO₂ and O₂ monitoring in action and learn how the system supports process optimisation and emission reporting.
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Products and Services

REAL DRIVING EMISSIONS

WE OFFER ON-ROAD DRIVING EMISSION MEASUREMENTS USING THE PLUME CHASING METHOD.

OPEN PATH REMOTE SENSING

ACTIVE REMOTE SENSING UV-VIS SPECTROSCOPY.

OPEN PATH HYBRID INSTRUMENT

HYBRID OPEN-PATH MAX-DOAS REMOTE SENSING.

OPEN PATH NH3 REMOTE SENSING

CONTACT-FREE NH3 REMOTE SENSING.

SHIP EMISSION MONITORING

DETERMINATION OF SHIP NOx EMISSION FACTORS BY ICAD IN SITU NOx/CO2 ANALYSER

WASTEWATER GAS ANALYSER

The Airyx WGA020 is a wastewater greenhouse gas analyzer for real‑time N₂O, CH₄, CO₂ and O₂ monitoring. Ideal for denitrification basins, emission reporting and continuous process optimisation in wastewater treatment plants.

ICAD IN SITU NOx INSTRUMENTS

PRECISE AND MOBILE IN SITU NOx MONITOR.

ICAD IN SITU HONO INSTRUMENT

Direct HONO and NO₂ analyzer with sub‑ppb sensitivity and no calibration gas — ideal for atmospheric research and air‑quality monitoring.

SKYSPEC PASSIVE REMOTE SENSING

VERTICAL TRACE GAS PROFILES AND AEROSOL OPTICAL DEPTH.

SKYSPEC IMAGING SOFTWARE-PACKAGE

GAS CAMERA. VERTICAL TRACE GAS PROFILES. NO2, SO2, HCHO, HONO.

NOx IMMISSION STUDIES

PLANNING AND IMPLEMENTATION OF NOx IMMISSION STUDIES, DATA ANALYSIS AND FINALIZATION OF REPORTS.

INSTRUMENT RENTAL

RENT OUR MOBILE AND EASY-TO-OPERATE GAS MEASUREMENT INSTRUMENTS FOR YOUR APPLICATION.

SKYSPEC EVALUATION PACKAGE

VERTICAL TRACE GAS PROFILES AND AEROSOL OPTICAL DEPTH USING PASSIVE SCATTERED SUNLIGHT SPECTROSCOPY.

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