Calibration Certificates

Calibration certificates for temperature & humidity

Calibration is an important part of using a thermometer for critical checks. Having a calibration certificate to verify the accuracy of your instruments provides greater confidence and security in your readings. At ETI, we have an in-house UKAS laboratory for temperature and humidity calibration.

ETI Calibration Services

Calibration Certificates

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UKAS 3 point - instrument & probe (-18, 0, +70°C) *probe required for calibration

UKAS 3 point - instrument & probe (-18, 0, +70°C) *probe required for calibration

UKAS 3 point - instrument & probe (-18, 0, +70°C) *probe required for calibration
£66.00
£79.20 inc. VAT
£0.00 £66.00
£79.20 inc. VAT
5 point Traceable IR Certificate - Instrument Only (-18, 0, +40, +70, +100°C)

5 point Traceable IR Certificate - Instrument Only (-18, 0, +40, +70, +100°C)

5 point Traceable IR Certificate - Instrument Only (-18, 0, +40, +70, +100°C)
£78.00
£93.60 inc. VAT
£0.00 £78.00
£93.60 inc. VAT
UKAS 5 point -instrument & probe (-18, 0, +40, +70, +100°C) *Probe required for calibration

UKAS 5 point -instrument & probe (-18, 0, +40, +70, +100°C) *Probe required for calibration

UKAS 5 point -instrument & probe (-18, 0, +40, +70, +100°C) *Probe required for calibration
£78.00
£93.60 inc. VAT
£0.00 £78.00
£93.60 inc. VAT
Digital Fridge Freezer Alarm Thermometer | UKAS Certified

Digital Fridge Freezer Alarm Thermometer | UKAS Certified

Digital Fridge Freezer Alarm Thermometer | UKAS Certified
£52.50
£63.00 inc. VAT
£52.50 £52.50
£63.00 inc. VAT
UKAS 5 point - instrument & 2 probes (-18, 0, +40, +70, +100°C) *probes required for calibration

UKAS 5 point - instrument & 2 probes (-18, 0, +40, +70, +100°C) *probes required for calibration

UKAS 5 point - instrument & 2 probes (-18, 0, +40, +70, +100°C) *probes required for calibration
£117.00
£140.40 inc. VAT
£0.00 £117.00
£140.40 inc. VAT
UKAS 3 Point - Humidity Certificate (25, 50, 75 %RH) new items only

UKAS 3 Point - Humidity Certificate (25, 50, 75 %RH) new items only

UKAS 3 Point - Humidity Certificate (25, 50, 75 %RH) new items only
£85.00
£102.00 inc. VAT
£0.00 £85.00
£102.00 inc. VAT
UKAS 5 Point Certificate - Instrument Only (-18, 0, +40, +70, +100°C)

UKAS 5 Point Certificate - Instrument Only (-18, 0, +40, +70, +100°C)

UKAS 5 Point Certificate - Instrument Only (-18, 0, +40, +70, +100°C)
£88.00
£105.60 inc. VAT
£0.00 £88.00
£105.60 inc. VAT
UKAS 3 Point - Internal Sensor Logger Certificate (-18, 0, +40°C)

UKAS 3 Point - Internal Sensor Logger Certificate (-18, 0, +40°C)

UKAS 3 Point - Internal Sensor Logger Certificate (-18, 0, +40°C)
£78.00
£93.60 inc. VAT
£0.00 £78.00
£93.60 inc. VAT

ETI UKAS Laboratory

Learn about our accrediations and capabilities.

 UKAS Laboratory

Frequently asked questions

What is a calibration certificate?

All thermometers can drift after time, which is when their readings become less accurate. Calibration tests confirm the accuracy of a thermometer's readings. During the test, the thermometer's measurements will be compared with a traceable device or reference thermometer.

A calibration certificate is an official document to show the results of the calibration test. This will prove the accuracy of your thermometer or show that it needs recalibrating. If it needs to be recalibrated, you will receive fresh documentation afterwards to show this.
Do new ETI thermometers come with calibration certificates?

All of the thermometers manufactured in our factories in  the UK are either sold with a free calibration certificate or have the option to purchase a UKAS certificate on top if desired.

Please note that adding an optional certificate to your order will delay the delivery time by 7-10 days / 10-14 days dependant of certificate type, to allow the calibration process to take place. 
What are the different types of calibration certificate?

There are two types of thermometer calibration certificates: traceable and UKAS.

Traceable certificate 
Shows your thermometer has been tested against a thermometer within the traceability chain. The traceability chain is a string of thermometers which leads back to the highest-level reference thermometer in a national calibration centre (or equivalent). 

UKAS certificate
Shows a thermometer has been tested in a UKAS-accredited laboratory.
What is UKAS Calibration?

UKAS calibration certificates show that a thermometer or hygrometer has been tested in a UKAS-accredited laboratory.

UKAS is the National Accreditation Body for the United Kingdom. Tests in UKAS-accredited laboratories are completed to the highest standard in the country. 
Do I ned a traceable or UKAS calibration certificate?

Start by checking whether your customer, contract or quality procedures specify a particular type of calibration certificate. A traceable certificate may be suitable for routine temperature and humidity monitoring where accredited calibration is not required.

If your requirements specify UKAS-accredited calibration, choose a UKAS certificate. This provides results from a laboratory whose competence has been independently assessed against ISO/IEC 17025 for the calibration work covered by its accreditation.

Whichever option you choose, the calibration points should reflect the temperatures or humidity levels you measure. If you need help selecting a certificate, contact our team to discuss your instrument and application.
What happens if my thermometer is found to be inaccurate during calibration?

Calibration measures the difference between your thermometer’s readings and a reference standard. If that difference falls outside the acceptable tolerance for your application, the thermometer may need adjustment, repair or replacement.

Calibration does not automatically include adjustment. If adjustment or repair is possible, the thermometer should be calibrated again afterwards to confirm its performance. The certificate should clearly identify whether the results were recorded before or after any changes.

If you use the thermometer for critical checks, review whether the inaccurate readings could have affected previous measurements before returning it to use.