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Radiological Calibrations

UKAS Accredited Radiological Calibrations

Ensure full IRR17 compliance with our UKAS-accredited calibration laboratory. Rapid turnaround times and real-time tracking for medical, industrial, and nuclear sector equipment.

Electronic Personal Dosimeter

Contamination Monitor Calibrations

Dose Rate Calibrations

Instrument Repairs

Accredited to 17025

Radiation Measurement Equipment We Calibrate

Our UKAS-accredited calibration laboratory covers the full spectrum of radiation measurement and dosimetry instrumentation.

Book Your UKAS Radiological Calibration

Use the booking form below to reserve your calibration slot and upload the required supporting documentation.

Steps For Booking Your UKAS Calibration

Step 1: Record of Consignment

Download and complete the Record of Consignment Form which you'll need to later on in the process.

Step 2: Online Form

Complete the adjacent online form, remembering to upload the completed Record of Consignment Form from step one.

Step 3: Receive Quote

Our team will review your calibration request and get in touch with a quotation to carry out the work.

Step 3: Checkout Redirect

Complete the adjacent online form, remembering to upload the completed Record of Consignment Form from step one.

Download Record of Consignment

Complete and attach the form.

UKAS Calibration Booking Form

How Our Calibration Process Works

From initial booking through to return, our calibration process is designed for minimum disruption to your operations and maximum confidence in the results.

01
Book & Submit Calibration
Submit your calibration request and ship instruments with the consignment form to our lab.
02
Notification of Receipt
After your instruments have been received, you'll receive confirmation of arrival.
03
Calibration Tracking via Portal
Track your instrument's progress in real-time through our dedicated customer portal.
04
Instruments Returned
After a successful calibration, instruments and certificate are returned to you.

Ready to Book Your UKAS Calibration?

Submit our online booking form and our expert team will be in touch to assist. 

Our UKAS Accredited Calibration Laboratory

Accredited to 17025

We’re proud to be accredited by the United Kingdom Accreditation Service (UKAS), ensuring our laboratory practices meet ISO/IEC 17025 standards.

Accredited to 17025

The Importance of UKAS Accreditation for Radiation Instrument Calibration

UKAS ISO/IEC 17025 accreditation is the gold standard for calibration labs. It provides independent assurance that our measurements are accurate, reliable, and traceable to NPL national standards.

For organisations under UK radiation legislation, using a UKAS-accredited lab is the recognised way to prove compliance with IRR17 Schedule 4 requirements for “suitable and sufficient” instrumentation.

Legally Recognised Certificates

UKAS calibration certificates are accepted by the HSE, Environment Agency, ONR, and CQC as evidence of instrument traceability and accuracy.

Measurement Traceability

Every calibration is traceable through an unbroken chain of comparisons to NPL national standards, providing metrological confidence in your measurements.

Independent Oversight

UKAS conducts regular assessments of our laboratory against ISO 17025 - you benefit from independent scrutiny of our technical competence, not just our word.

Regulatory Framework
Ionising Radiations Regulations 2017

All radiation monitoring instruments must be properly maintained and calibrated. Schedule 4 requires them to be suitable for their intended use, which means they must have traceable calibration.

Environmental Permitting Regulations 2016

Governs radioactive substances regulation in England and Wales. Calibrated monitoring equipment is required to demonstrate compliance with permit conditions and discharge limits.

Environmental Authorisation (Scotland) Regulations 2018

Scotland's equivalent regulatory framework requiring calibrated instrumentation to support environmental monitoring and radioactive waste management compliance.

Radiation Emergency Preparedness Regulations 2019

Requires emergency monitoring equipment to be maintained in calibrated condition, ready for deployment in the event of a radiation emergency.

The international standard for testing and calibration laboratory competence, impartiality, and consistent operation.

Frequently Asked Questions

Common questions from radiation protection professionals, and compliance managers about UKAS calibration requirements and our services.

What is UKAS accreditation and why does it matter for calibration?

UKAS (United Kingdom Accreditation Service) is the sole national accreditation body recognised by the UK government to assess organisations providing testing, calibration, and inspection services against internationally agreed standards (such as ISO/IEC 17025).

 

UKAS accreditation matters because it provides independent verification that a calibration laboratory operates to the highest technical competence, measurement accuracy, and quality management standards. Using a UKAS-accredited laboratory ensures full metrological traceability to national standards, helping you satisfy statutory safety audits and regulatory compliance requirements.

Under Regulation 20 of the Ionising Radiations Regulations 2017 (IRR17) and its associated Approved Code of Practice (ACoP), radiation protection and monitoring instruments must be adequately tested and calibrated at least once every 12 months.

 

Additionally, instruments must undergo performance testing before being used for the first time, or following any significant repair, physical damage, or suspected malfunction.

Upon successful completion of the calibration process, you will receive:

  • UKAS Calibration Certificate: An official certificate detailing the measurement results, expanded uncertainties, environmental conditions during testing, and direct traceability back to national standards.

  • Calibration Sticker/Label: Affixed directly to your instrument displaying the test date, certificate number, and recommended next calibration due date.

  • Examination Report: Detailed breakdown of pre-calibration checks, initial response tests, and pass/fail criteria verified by a Qualified Person.

If your instrument fails to meet required tolerance levels, sensitivity, or linearity standards during testing:

  • Detailed Reporting: You will receive a non-conformance report outlining the specific parameters or measurements that failed.

  • Adjustment or Repair Quote: We will contact you with an assessment of whether the unit can be adjusted, repaired, or needs component replacement.

  • Recalibration: Once repaired, the instrument will undergo a complete calibration sequence to issue a valid certificate.

  • Decommissioning Advice: If the instrument is beyond economic repair (BER), we will advise on suitable replacement options to maintain your site safety standards.

Booking a UKAS calibration with us is straightforward:

  • Submit your calibration request and ship instruments with the consignment form to our lab.
  • After your instruments have been received, you’ll be receive confirmation of arrival.
  • Customers can request access to our portal to track the calibration process of their instrument.
  • After a successful calibration, instruments and certificate are returned to you.

Need More Detailed Guidance?

Our team are here to help support with any queries you may have.

Book Your UKAS Radiation Calibration

Ensure statutory IRR17 compliance. Speak with our calibration laboratory team or request a formal quote today.

Calibration Enquiry Form

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Get in Touch

calibration@htsl.co.uk

01244 835120

Download Our UKAS Accredition

Get our official schedule of accreditation, measurement uncertainties, and traceable ranges.

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