National Physical Laboratory

  • Science + Technology

    Science + Technology

    NPL maintains a wide portfolio of internationally visible research programmes that advances measurement science, underpins the SI system and supports various cross-disciplinary technologies.

    Science stories

    • New insight into HIV

      Collaborative research provides new insight into a fusion protein that enables HIV to infect host cells.
      More

    • The world's slowest clock

      Collaborative research between NPL and SUERC has calibrated the argon-argon clock, which is used to date geological events.
      More

    • Finite element code released

      'Zinc' is a multiphysics finite element code capable of solving a wide range of physics and multiphysics problems.
      More
  • Commercial Services

    Commercial Services

    NPL's commercial services are built on 100 years of leadership in accuracy, innovation and scientific research. Experienced consultants and project managers draw upon a unique combination of industry know-how and world-leading scientific discovery to deliver real-world business solutions and enable innovation and secure competitive advantage.

    Testimonials

    • Bentley Logo

      Thanks to NPL Training, the measurement associates are now thinking out of the box. We are already seeing a faster turnaround of measurement activities with higher accuracy and increased confidence. NPL is known for its technical expertise in this area, and can provide the highest level validated training. It's added to our professionalism and improved communication with our suppliers

      Mark Imms
      Metrology Manager
      Bentley Motors

    • surreysat2

      NPL has provided us with very valuable services, which have helped ensure that our satellites offer the accuracy needed provide our customers with technology they can trust, and remain ahead of our competitors.

      Dr Martin Unwin
      Head of GNSS/GPS Team
      Surrey Satellite Technology Ltd

    • bpGif



      BP Exploration has continued to benefit from NPL's world class corrosion testing and modelling capabilities in 2009, and we intend to cooperate even more closely in 2010 and beyond.

      Steve Groves
      Programmes Manager
      Inherently Reliable Facilities Flagship BP
  • Educate + Explore

    Educate + Explore

    We strive to actively promote public awareness and appreciation of science and technology, particularly the importance of measurement and the role of NPL. Here you can find out more about the interesting things we do, science outreach activities you can get involved in or take a look at some of our educational resources.

    Outreach Activites

  • NMS Learning Zone
  • Measurement Network

    Measurement Network

    For anyone with an interest in measurement. It aims to facilitate the sharing of measurement knowledge and information between NPL scientists and members of the network, as well as providing a forum for the sharing and exchange of information and advice between members and other measurement experts.

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Contacts

Dosimetry - Contacts

X- and gamma-ray standards
Air kerma at protection and environmental levels Martin Kelly / Graham Bass
Air kerma at diagnostic and mammographic levels Martin Kelly / James Manning
Air kerma at therapy levels James Manning / Thorsten Sander
Primary standards of air kerma Martin Kelly
kVp-meters for measurement of kV Martin Kelly / Graham Bass
Beta-ray ophthalmic applicators
Surface absorbed dose, beta-ray Graham Bass
High energy photon standards
High energy photon dosimetry; calorimetric standards for absorbed dose Dr Simon Duane
Electron-beam dosimetry
Electron-beam dosimetry at therapy and industrial levels Dr Mark Bailey
Chemical and solid-state dosimetry
Chemical methods of dosimetry at therapy and industrial dose levels Dr Peter Sharpe / David Crossley
Dosimetry for industrial processing Dr Peter Sharpe / David Crossley
Numerical dosimetry
Theoretical and computational modelling David Shipley
Facilities
Linear accelerator, hire and irradiations Chris Thomas / Dr Mark Bailey
Theratron Cobalt 60 irradiator, hire and irradiations James Manning
X-ray facilities, hire and irradiations James Manning
Mainance Caesium 137, Cobalt 60 and Americium 241irradiator, hire and irradiations James Manning
High dose Cobalt 60 irradiators Kamalini Rajendran