ISO17025 UKAS Accredited Humidity and Temperature Calibration

Qrometric Laboratory

Qrometric are ISO17025 accredited by UKAS for the calibration of dew point, relative humidity, and temperature.

You can view our UKAS Schedule of Accreditation here.


Our brand-new state-of-the-art laboratory is equipped with modern two pressure humidity generators to enable precise accredited calibration of relative humidity (RH) from 10 to 95 %rh over the temperature range of -10°C to +85°C, including calibration of temperature in air.

  • RH uncertainties in the range of ± 0.21 to ± 0.77 %rh (k=2)
  • Temperature in air uncertainties of ± 0.07 °C (k=2)

Our accredited RH and temperature calibration capability is ideally suited for working and transfer standard instruments used in calibration and validation applications.

Accredited Dew-frost point calibration

Using the FPG dew point calibrator for the low range, and two pressure systems for the high range, we can also calibrate frost-dew point instruments over the accredited range of -75°C to +85°C. Calibration traceable to National Standards is possible to -100 °C frost point using the FPG and a transfer standards dew point chilled mirror.

  • Accredited Dew-frost point calibration uncertainties are in the range of ±0.06 to ± 0.133 °C (k=2)

Our accredited dew point calibration service is ideally suited to transfer and working standard instruments such as dew point chilled mirrors.

DHL Delivery van in Town

Fast, Cost Effective, High Quality Service

  • With fast turnaround times, we ensure minimal disruption to your business by scheduling your hygrometer into our calibration runs in advance.
  • Competitive pricing makes our services cost-effective without compromising performance quality.
  • Qrometric’s low uncertainties will instill confidence in your laboratory and reference measurements.
  • We can provide 24/7 online access to your UKAS certificates through our customer portal that can also send you reminders to book re-calibration.