Free Probe Thermometer Calibration Record

A free probe thermometer calibration record for UK food businesses. Test each probe in iced water and boiling water: pass or fail, and the next check date, are worked out for you.

Fill in the calibration record online

Online Probe Thermometer Calibration Record

Test each probe in iced water and boiling water and type the readings. Pass or fail, and the next check date, are worked out for you.

Based on FSA guidance for England, Wales and Northern Ireland; in Scotland check Food Standards Scotland guidance. Entries are stored only in this browser on this device, so print or download them for your records.

Free tool by Display-Fridge Wholesale

Frequently asked questions

What is a probe thermometer calibration record?

A record of regular accuracy checks on each probe thermometer, using iced water and boiling water, with the result and any action taken.

What is the probe thermometer calibration record for?

It shows that the thermometers behind all your temperature records read correctly, and that faulty probes are taken out of use.

Who should check probe thermometers?

A manager or a trained member of staff. It takes a few minutes per probe.

How often should a probe thermometer be calibrated?

At least once a month, and whenever a probe has been dropped or gives a reading that seems wrong.

What reading should a probe give in iced water?

Between −1°C and +1°C, in a glass of crushed ice topped up with cold water, after stirring and waiting a minute.

What reading should a probe give in boiling water?

Between 99°C and 101°C, with the tip in rapidly boiling water and away from the bottom of the pan.

Where should the calibration record be kept?

With your other food safety records, or on a tablet using the online or Excel version.

What if a probe thermometer fails the test?

Stop using it, label it as faulty, change the battery and test again. If it still fails, replace it.

How does a calibration record help my business?

It makes your fridge, cooking and cooling records trustworthy, and shows an inspector that your monitoring equipment is checked.

Is the online calibration record saved?

Yes, in the browser on your device only. Nothing is sent to us. Print it or download a CSV file regularly.

Your business with our calibration record, and without

Using our calibration recordWithout it
AccuracyEvery probe tested monthlyA faulty probe used for months
Temperature recordsReadings you can trustRecords that may be wrong
Failed probesFlagged and taken out of useStill in the drawer, still being used
InspectionsProof your monitoring equipment is checkedNo evidence the probes are accurate
Next checkDate worked out for youForgotten until something goes wrong
FormatPDF, Excel and online, freeNo record at all

Why calibrate your probe thermometer?

Every temperature you record, from fridge checks to cooking and cooling, depends on your probe thermometer being accurate. A probe that reads 2°C low will tell you a fridge at 9°C is at 7°C. Checking probes regularly, and recording the result, is how you know your other records can be trusted.

The iced water test

Fill a glass with crushed ice and top it up with cold water. Stir and wait a minute. Put the probe in the centre, not touching the glass, and wait until the reading stops changing. It should read between −1°C and +1°C.

The boiling water test

Put the probe in rapidly boiling water, away from the bottom of the pan. It should read between 99°C and 101°C. Take care with steam and hot water.

When a probe fails

Stop using it and label it as faulty. Change the battery and test again. If it still fails, replace it, and think about whether any recent readings taken with it need checking again.

The printable PDF record, with the two test ranges at the top.
The printable PDF record, with the two test ranges at the top.

How to use the calibration record, step by step

  1. Check the pass ranges

    Enter your business name. The pass ranges are −1°C to +1°C in iced water and 99°C to 101°C in boiling water, with a check every 30 days.

    Pass ranges, check interval and counters
    Pass ranges, check interval and counters
  2. Test each probe and type the readings

    Tap ‘+ Add a check’, enter the thermometer ID and the two readings. The Result column shows Pass, with the next check date, or Fail.

    Three probes tested; one failed and passed after a battery change
    Three probes tested; one failed and passed after a battery change
  3. Act on a fail

    Write what you did in ‘Action if failed’, change the battery and add a new row for the re-test. Replace the probe if it fails again.

  4. Keep your records

    Print the record or save it as a PDF, or download a CSV file. Prefer paper? Print the PDF record.

    Add, print, download and clear buttons
    Add, print, download and clear buttons

Using a probe correctly

  • Clean and sanitise the probe before and after each use, using probe wipes.
  • Insert the tip into the thickest part of the food.
  • Wait until the reading stops changing before you record it.
  • Use separate probes, or clean thoroughly, between raw and ready-to-eat food.
  • Compare your fridge displays with the probe once a week: more than 2°C apart means the unit needs a service.

Related free resources

These resources follow Food Standards Agency guidance for England, Wales and Northern Ireland. If your business is in Scotland, check the guidance from Food Standards Scotland. They support your food safety management system, such as Safer Food, Better Business, and do not replace it.