National Physical Laboratory

Virtual Chimney Products & Services

Environmental measurement scientists at NPL provide high quality, cost effective pollution monitoring and analysis services. All of our measurements are traceable to UK National Standards.  
  • NPL offers a rapid service for measurement of a range of anions, as required for emissions measurements of acid gases emitted from power stations, waste incinerators and similar facilities, sampled using wet chemical methods.
  • NPL has developed a new facility within which well-controlled dispersions of nano- and micro-particles can be mixed, conditioned and sampled.
  • Networks of ambient measurement sites exist to provide public health information, to monitor compliance with UK and EU regulation, and to further air quality modelling and research aims.
  • Accurate monitoring of ambient air quality is important for regulatory purposes and industrial impact assessment. An ambient air quality survey from NPL is UKAS accredited for sampling and analysis.
  • NPL has invested in a filter handling, conditioning and weighing system to automate the process from start to end.
  • Airborne nanoparticle number concentration detectors such as Condensation Particle Counters (CPCs) are a key part of many measurements for vehicle emissions, ambient air quality, occupational exposure and other applications.
  • The DIAL facility is a self-contained, mobile laboratory that rapidly detects and accurately measures airborne atmospheric pollutants. This laser-based system is used around the world to quantify and visualise emissions, creating 3D emission maps of pollutants such as airborne hydrocarbons.
  • NPL promotes good source emissions measurement practice via training and consultancy. We are on the Management Board of the Source Testing Association, with whom we organise proficiency testing schemes. We have been involved with the creation of the Environment Agency's MCERTS scheme and we offer guidance on the implementation of CEN standards, e.g. EN14181.
  • NPL offers a complete range of solutions from long-term routine point sampling to state-of-the-art atmospheric surveys using remote sensing techniques such as differential absorption lidar.
  • The National Physical Laboratory (NPL) provides a complete solution for method 325 monitoring: from initial consultancy and setup through to sample collection and analysis.
  • NPL provides consultancy services to help industry report accurately their emission of carbon dioxide and methane, to comply with the Emissions Trading Scheme and other environmental legislation.
  • It is essential to quantify the environmental impact of new and existing industrial processes to show compliance with UK and EC legislation.
  • NPL offers a range of validation and calibration services which support atmospheric science, emissions monitoring and measurements for security.
  • NPL undertakes a range of instrument development projects, building on expertise in applying optical and analytical techniques to atmospheric monitoring.
  • NPL has developed a dedicated suite of test and calibration facilities that are accredited under ISO 17025.
  • NPL provides a professional and competitively priced MCERTS/UKAS-accredited stack monitoring and compliance testing service utilising industry standard techniques.
  • NPL offers a range of services related to the security sector.
  • The development and deployment of carbon capture and storage (CCS) technologies will inevitably create novel measurement challenges for the technical operation and for the plant's environmental performance.
  • NPL offers a very accurate and rapid service for measurement of the total particulate-phase mass of a range of metals on filter material or mass fraction in acid solutions, as required for characterising emissions from waste incinerators and similar facilities.
  • NPL, as part of the NMS programme, has developed a new facility within which well-controlled dispersions of nano- and micro-particles can be mixed, conditioned and sampled.
  • Accurate monitoring of indoor air quality is important to ensure human exposure to harmful substances does not exceed regulatory limits. An NPL survey monitors and assesses indoor air quality to provide an accurate account of the levels of gas present in the work place.
  • NPL services include filter weighing for PM10 and PM2.5 measurement according to standard protocols, sampling and analysis of metals, anions and PAHs and QA/QC audits for automatic particulate measurement and speciation equipment.
  • NPL has established world-leading expertise in the procedures used to assure the quality of all types of environmental gas and particulate measurements.
  • NPL's experienced staff can design monitoring campaigns; provide expertise and advice on optimum sampling techniques; and provide comprehensive data analysis, reporting and interpretation.
  • Soil probes are used to screen for volatile organic compounds (VOCs) in contaminated land.
  • NPL organises three proficiency testing (PT) schemes in the stack emissions measurement area: Particulate, Gas Measurement and Gas Cylinder.
  • The Stack Simulator can be used for both instrument development and personnel training. It allows manufacturers of new continuous emission monitors to test their equipment over a range of operating conditions.


Please note that the information will not be divulged to third parties, or used without your permission