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Accredited third party since 2008

Emission measurement

Over 20 years of expertise in accredited exhaust measurements of emissions to air. Independent accredited third party for maritime, offshore, and industrial processes.

Ecoxy exhaust measurement

Accredited measurements you can trust

Ecoxy performs accredited exhaust measurements on diesel engines, gas engines, gas turbines, and boilers. We are approved by Norwegian Accreditation and have provided services to shipping companies, oil companies, and industrial actors since 2007.

Our field engineers have conducted measurements of more than 700 engines on board over 400 vessels and possess the expertise required to deliver precise and legally valid measurement reports.

700+

Measured engines

400+

Vessels

2007

First assignment

What we measure

We cover all relevant components of exhaust from combustion processes

NOx – Nitrogen oxides

Measured with chemiluminescence (CLA). Requirements from the NOx fund, the Activity Regulation §70b/§70c, and the IMO NOx Technical Code. The most important component for Norwegian vessels and platforms.

IMO NOx TC · ISO 8178-2:2021

CO and CO₂

Measured with non-dispersive infrared (NDIR). CO₂ is central for EU ETS reporting. CO documents combustion efficiency and compliance with emission limits.

NDIR

SO₂ and CH₄

Sulfur dioxide and methane. Important for ships operating in SECA zones and platforms with gas treatment. Documents compliance with MARPOL Annex VI and EU requirements.

NDIR · UV spectroscopy

Particles (PM) and NH₃

Particle measurement and ammonia. Particles are relevant for the NOx fund and local emission requirements. NH₃ is used in SCR systems to document ammonia slip and efficiency.

Gravimetry · Chemical analysis

HC and O₂

Unburned hydrocarbons (THC) and oxygen. HC measurement using the HFID method. O₂ is used for calculating dry reference gas and correcting other concentrations.

HFID · PMA

Complete gas package

Ecoxy offers measurement of all relevant gas components in a single campaign. This streamlines mobilization and provides the customer with complete documentation in one report.

NOx · CO · CO₂ · SO₂ · CH₄ · NH₃ · PM

Standards and sectors

We perform measurements according to all relevant national and international standards

Maritime and offshore

ISO 8178-2:2021 and IMO NOx Technical Code for ships. ISO 11042-1:1996 for gas turbines. Applicable to all types of vessels and offshore installations.

Land-based facilities

NS-EN 12619, NS-EN 14789, NS-EN 14792, NS-EN 15058, ISO/IEC 12039. District heating plants, combined heat and power plants, and industrial processes.

Norwegian regulations

Activity Regulation §70b/§70c for NCS vessels. The NOx fund and the Pollution Regulation. Approved by the Maritime Directorate as a competent actor.

International requirements

MARPOL Annex VI for marine SO₂ and NOx. EU ETS for CO₂ quota reporting. Support for Tier I, II, and III certification under IMO.

How we conduct a measurement

Preparations on board

Ecoxy coordinates with vessels/facilities in advance to ensure that engines are in a stable operating condition and that necessary infrastructure is available for gas probe connection.

Execution

Measurements are performed at four load points (100%, 75%, 50%, 25%) for main engines and at 50% for auxiliary engines, according to ISO 8178 E3/D2/C1 cycles.

We use the Horiba PG-250 analyzer with heated sampling lines, electric cooler, and LabVIEW-based data collection – equipment that ensures precision and traceability.

Report and documentation

After measurement, Ecoxy prepares an accredited report in accordance with applicable standards. The report is legally valid documentation for the NOx fund, the Maritime Directorate, and EU ETS authorities.

Tip: Ecoxy can combine exhaust measurement with EU ETS verification in one mobilization – this saves time and costs for the shipping company and operator.

Equipment and analysis methods

Our analytical equipment is calibrated and maintained according to accreditation requirements:

  • NDIR – CO and CO₂ (non-dispersive infrared)
  • CLA – NOx (chemiluminescence)
  • PMA – O₂ (paramagnetic analysis)
  • HFID – HC (heated flame ionization detector)
  • Horiba PG-250 – combined analyzer
  • LabVIEW – automated data collection and logging

Order emissions measurement

Fill out the form for quotes and timing. We will contact you for an appointment within 24 hours on weekdays.

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Accreditations and certifications

NA TEST 225 NA TEST 225
NA VV-003 NA VV-003
Kiwa Certified Kiwa Certified
Kiwa ISO 14001 Kiwa ISO 14001
Achilles Achilles
Magnet Registered Magnet Registered