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Quantifying vehicle particulate emissions  

NPL has a range of particle measurement capabilities to support the quantification of vehicle particulate emissions and the calibration of equipment used to perform those measurements.  

CPC calibrations 

NPL has a UKAS accredited calibration service for condensation particle counters (CPCs) that is traceable to NPL’s Faraday Cup electrometer and primary reference standards. 

DMA and SMPS calibrations 

Calibrations services offered by NPL cover both differential mobility analyser (DMA) and scanning mobility particle sizer (SMPS) instruments common to the automotive industry.  

VPR and PEMS calibrations 

NPL offers calibration services for both volatile particle remover (VPR) and complete portable emissions measurement systems (PEMS).

Gas standards for vehicle emission measurements

NPL also provides gas standards for calibrating vehicle emissions monitors, which can be prepared to the requirements of the customer. Further details can be found here.

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