Mass & Weight Calibration.

Guaranteed in 5 working days or less – simply better service

Weight Set calibrations:

Ensure your test weights are kept reliable and accurate.

  • UKAS ISO calibrations

    We can offer UKAS / ISO 17025 standard calibrations

  • True 5 day service

    Our 5 day lead time is inclusive of collection and return, minimising disruption to your business while maximising uptime

  • Send more, save more

    We’re able to offer significant discounts on bulk calibrations of 10 items or more

Book your calibration online now:

Quantity discounts when you send 10 or more items.

Quantity discounts available when booking in 10 or more electrical items for calibration.


Further Discounts.

If you don’t require a 5 day turnaround for your electrical items, you can qualify for further discounts depending on how long you can wait for your items to be calibrated.

    A True 5 Day Weight Calibration Service From The Weighing Experts.

    Minimise disruption and maximise uptime.


    We’re proud to offer a true 5 day turn around on all our calibrations:

    • We’ll collect on day 1
    • Then calibrate within 2 days
    • Return them to you within 2 days

    But that’s not all the value you’ll get from using Calibration Select!

    At our UKAS accredited Calibration Laboratory in Birmingham, our team calibrate F1, F2 and M1 mass weights. Our mass weight calibration service covers the reporting of convention mass, expanded uncertainty and traceability in accordance with ISO/IEC 17025 requirements.

    Our Calibration Laboratory is accredited by UKAS to ISO 17025 for mass weight calibrations and can arrange for the following to ensure traceability of calibrated weights:

    • Measurement uncertainty: assigned to each calibration and clearly stated on the calibration certificates for weights
    • Documentation: a calibration certificate, showing all results including uncertainties and other information required by the standard ISO/IEC 17025
    • Competence: demonstrated by actively participating in proficiency testing in cooperation with industry and government partners
    • All weight references are metrologically traceable to national standards
    There are 3 ways you can get your Weights to us for calibration:
    Collection & Return

    For hassle-free calibrations, we recommend you use our collect and return service for 8 or more items, carried out by one of our local technicians.

    Customer Shipping.

    Make a saving per item by sending your weighing equipment to our Calibration Laboratory via your own preferred delivery method and we’ll return the items by courier.

    Local Drop-off.

    Drop-off and collect your weighing equipment in person at our Calibration Laboratory in Birmingham. Optional same-day fast track turnaround available**, subject to availability.

    *Minimum of 8 items per box. **For fast tracked calibrations, drop-off and collect your equipment in person from our Calibration Laboratory in Birmingham, to receive a same-day turnaround.

    Test Weight calibration service FAQ.

    The answers to questions we get asked most frequently.

    We recommend an annual calibration to ensure that your test weights are performing as expected and they conform to manufacturers standards. More frequent calibration may be desired depending on the weight use and the class of weight.

    The accuracy of balances and scales becomes less reliable over time. They should be checked at regular intervals with calibrated weights to ensure constant reliability and reduce the risk of measurement error. The test weights used as part of the calibration process should also be calibrated to avoid measurement uncertainty.

    Replacement service:

    If your electrical tester or instrument cannot be calibrated or is uneconomical to repair, we will contact you straight away and offer a branded like-for-like replacement. We will supply the replacement calibrated to your original order requirements.

    Related Article: Gently does it: How to handle test weights.

    Did you know that small dust particles can affect calibration results on highly sensitive balances? This can be avoided by storing test weights in a protective case when they’re not in use.


    Find out more

    Can’t see the items you need calibrating above?

    We can calibrate much more than the items we’ve listed above, including pressure, temperature, torque, weight and mass equipment, so please drop us a message with your requirements and we’ll provide you with a quick, no-obligation quote.


    Contact us