XAIS-PTS Materials Testing Laboratory

XAIS-PTS offer a UKAS EN ISO/IEC 17025 accredited testing laboratory that offers quality testing you can rely on. XAIS-PTS has built a strong reputation in the industry over many years regarding our Pavement Testing Laboratory and can offer a professional and reliable service. It is common knowledge that quality is the key when dealing with laboratory testing. Having results you can accurately rely on is paramount to both our and our client’s success.

Our experienced team has deep knowledge of routine aggregates, bitumen testing, and cutting-edge asphalt technology, such as fatigue testing and mix design. We are leading the way in an industry more focused on sustainability and in-situ recycling. XAIS-PTS also strongly focuses on full pavement evaluations, which enable targeted improvements to carriageways to ensure the value management process is productive.

XAIS-PTS work with the client, designer or consultant to put together a tailored test schedule to meet the needs of your Scheme/Contract. We offer ‘one-off’ and ‘routine’ testing.

Our Laboratory, based in Preston, Lancashire, is accredited to BS EN ISO IEC 17025:2017. Our dedicated laboratory team performs the testing to the highest standard, giving reliable results.

Our accreditation is limited to those activities described on our 4706 UKAS schedule of accreditation.


We can carry out various additional testing, such as:

  • Percentage Refusal Density
  • Water Sensitivity
  • Brookfield Viscosity
  • Resistance to Hardening (RTFOT)
  • Pressure Aging Vessel (PAV)
  • Elastic Recovery

If there is additional testing that you may require, please contact us to discuss your requirements


Materials Testing

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UKAS Accredited

UKAS stands for the United Kingdom Accreditation Service. They are appointed by the government to be the sole agency authorised to assess the ability and competence of organisations that provide certification, testing, inspection and calibration services.

Below you can find our full UKAS accredited schedule.