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Calibration & Servicing

Why is calibration important?

Over time an instrument’s accuracy can drift. This is normally caused by general wear and degradation, however, hazardous environments or instrument shocks can speed up this process. To ensure confidence in the results of your instrument, we always advise that they should be regularly serviced and calibrated. This will ensure reliable, accurate and consistent measurements are given. 

Rhopoint Instruments has UKAS/ISO 17025 accreditation for gloss calibration. This accreditation ensures that gloss measurements are accurate, compliant, and reliable, thus supporting both product quality and business reputation.

There are 3 main reasons why calibration is important, especially within the manufacturing and testing industries:


To ensure that all results are accurate and true


To ensure that each test is measured against a consistent and repeatable result


Calibration and servicing ensures that measuring devices remain in conformance to measuring standards, a requirement for most industries

What happens during a calibration?


Physical condition assessment and basic function test.


Repeatability, accuracy and linearity of the instruminent are measured.
(Quote issued if major repair work is required. On receipt of a purchase order, the repair and recalibration is performed).


Optic elements are inspected. The gloss meter is calibrated throughout the full range of measurement for each parameter, with minor adjustments made if required.


Instrument calibration date, internal stored calibration values, calibration reference updated.


Calibration certificates for the tile and the instrument are generated along with a report of the as-received so that any changes made during the calibration can be tracked in a fully-traceable manner.

Return to service centre process

  1. Request a return calibration and service using our RMA form here.
  2. Send your hand-held or bench-top instrument to an authorised service centre using a courier of your choice. You’ll need to pay the courier fee.
  3. We’ll calibrate and service your instrument and return it to you within 3-10 days.
  4. Once we’ve completed your calibration and service, you’ll receive a report and calibration certificate.
  5. We’ll send you a yearly reminder near to the next calibration date. You can opt out of this service if you prefer.

Note: The primary master gloss artefacts used in our calibrations are calibrated by the National Institute of Standards and Technology (NIST), USA in accordance with the best practices and data available, which are upgraded when appropriate. All of our gloss calibrations are therefore traceable to NIST, with documentation available on request.

To find a local service centre, please use the button below. All listed centres are able to perform factory-level glossmeter calibrations adhering to Rhopoint procedures whilst providing full traceability for the instrument and tile.

Rhopoint Resources

Calibration guides

Rhopoint IQ & Novo-Gloss
FAQ & Troubleshooting Guide

Common questions about how to operate glossmeters
IQ Flex
Measurement advice

Advice on how to use and calibrate the IQ Flex
Why should I send my glossmeter for manufacturer’s recalibration?

Ensure accuracy with regular calibration

Why use Rhopoint for Calibration?

Accurate & Reliable

Confidence that reliable, accurate and consistent measurements are given

Report & Certificate

Fully-traceable updates in a report and a certificate showing proof

Annual Reminder

Never miss a service with our yearly reminder to schedule one