Environmental monitoring

NPL provides a high-quality, cost-effective service, which in many cases allows direct comparison with related Defra network measurements.

• Particulate monitoring and analysis

NPL provides a range of accredited services for the measurement of air quality in both outdoor and indoor environments, providing multi-component analysis for both short- and long-term measurements. These services can be provided as bespoke measurements or as part of air quality network activities.

• Air quality networks
• Ambient air quality surveys
• Occupational air quality measurements

NPL offers a unique suite of emission monitoring services, from MCERTS stack measurements through site emission surveys and long-term monitoring, to world-leading remote sensing technology using Differential Absorption Lidar (DIAL). This range of capabilities enables NPL to deliver cost-effective solutions to any emission monitoring requirement.

• Emission monitoring using Differential Absorption Lidar (DIAL)
• Fenceline monitoring - EPA method 325
• Stack emissions monitoring

The laboratories at NPL offer a wide range of analytical capabilities to provide detailed information on gas composition, whether this is needed for gas purity analysis or understanding the trace gases and particulates in ambient air.

• Acid gas analysis
• Hydrogen purity for fuel cell vehicles
• Sampling and analysis of complex VOCs

NPL operates a range of unique environmental sensor test facilities designed to help developers and users evalulate instrument performance, demonstrate conformance with industry-standard protocols, and carry out validation of instruments in the field. These facilities are also used to validate NPL's own instrument development and sales programme.

• Environmental instrument calibration and testing
• Environmental instrument sales
• Fugitive emission technique validation
• MCERTS instrument testing
• Stack simulator facilities

NPL promotes good emission measurement practice through a range of services, including proficiency testing, quality assurance services, training and consultancy.

• Emission measurement guidance and training
• Environmental consultancy
• Stack proficiency testing scheme

NPL has a range of services to give users and customers absolute confidence in radioactivity measurements

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• Ionising radiation protection
• Neutron services
• Radioactivity services