Our Emission Testing Services

PEMS Testing

Typical PEMS test

We have both HORIBA OBS-ONE GS-02 & GS-12 analysers ,with a selection of exhaust flow meters, allowing us to make precise measurement on a wide variety of vehicles, machines and HDV trucks. Gaseous measurement of CO, CO2, NOx, NO, NO2 & THC is conducted on a wet basis with particle number measurement using advanced CPC technology.

Key Areas
VHCResearch & Development Testing
Real World Driving Emissions RDE Testing (Real World Driving Emissions)
Vehicle Homologation Certification Vehicle Homologation Certification
Fuel Economy Testing Fuel Economy Testing


If you do not have the expertise in house to conduct PEMS testing we can provide unique and tailored consultancy service to quickly get your test capability compliant with type approval standards. Support in areas such as route development, operational & maintenance procedures and data analysis is available.

Key Areas
PEMS TestingAll areas in relation to PEMS testing including
Real world driving emissions RDE (real world driving emissions)
in-service conformity ISC (in-service conformity)
non road mobile machinery NRMM (non road mobile machinery)
Route DevelopmentRoute Development
Bespoke testing procedures Development of bespoke testing procedures



We have dedicated training rooms at our facility in Milton Keynes where up to eight delegates can be trained at one time and experience operating live equipment in a test environment including testing in-car on actual RDE test routes.

Key Areas
Comprehensive & Tailored PEMS related Training Programmes
PEMS Equipment Operation
RDE Legislation
Legislative analyser maintenance
All areas in relation to PEMS testing including:

Calibration checks
NOx converter efficiency
Linearization checks