All Probes

Full range of ETI temperature probes for measuring foods, liquids, surfaces and air/gases. Includes thermocouple, thermistor and PT100 probes. 
All Probes

ETI's range of thermometer probes is designed for accurate temperatures across a wide range of applications.

From high accuracy penetration probes for food safety to robust pipe probes for precise HVAC measurements, our probes are built with professionals in mind.

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  • Therma 20 Colour Coded Penetration Probe - White

    Therma 20 Colour Coded Penetration Probe

    Therma 20 Colour Coded Penetration Probe
    £37.00
    £44.40 inc. VAT
    £37.00 £37.00
    £44.40 inc. VAT
  • Fast Response Therma 20 Temperature Probe

    Fast Response Therma 20 Temperature Probe

    Fast Response Therma 20 Temperature Probe
    £42.00
    £50.40 inc. VAT
    £42.00 £42.00
    £50.40 inc. VAT
  • Between Pack Temperature Probe

    Between Pack Temperature Probe

    Between Pack Temperature Probe
    £55.50
    £66.60 inc. VAT
    £55.50 £55.50
    £66.60 inc. VAT
  • Therma 20 Penetration Probe -300mm

    Therma 20 Penetration Probe -300mm

    Therma 20 Penetration Probe -300mm
    £40.00
    £48.00 inc. VAT
    £40.00 £40.00
    £48.00 inc. VAT
  • Fast Response Therma 22 Penetration Probe

    Fast Response Therma 22 Penetration Probe

    Fast Response Therma 22 Penetration Probe
    £51.00
    £61.20 inc. VAT
    £51.00 £51.00
    £61.20 inc. VAT
  • Foil Between Pack NTC Temperature Probe

    Foil Between Pack NTC Temperature Probe

    Foil Between Pack NTC Temperature Probe
    £29.00
    £34.80 inc. VAT
    £29.00 £29.00
    £34.80 inc. VAT
  • Thermistor Food Simulant Temperature Probe

    Thermistor Food Simulant Temperature Probe

    Thermistor Food Simulant Temperature Probe
    £42.50
    £51.00 inc. VAT
    £42.50 £42.50
    £51.00 inc. VAT
  • Therma 22 Colour-Coded Penetration Probe - White

    Therma 22 Colour-Coded Penetration Probe

    Therma 22 Colour-Coded Penetration Probe
    £45.00
    £54.00 inc. VAT
    £45.00 £45.00
    £54.00 inc. VAT
  • Plug-Mounted FEP Plastic Probe (133-155)

    Plug-Mounted FEP Plastic Probe (133-155)

    Plug-Mounted FEP Plastic Probe (133-155)
    £37.50
    £45.00 inc. VAT
    £37.50 £37.50
    £45.00 inc. VAT
  • PT100 - RTD Penetration Probe

    PT100 - RTD Penetration Probe

    PT100 - RTD Penetration Probe
    £70.00
    £84.00 inc. VAT
    £70.00 £70.00
    £84.00 inc. VAT
  • PT100 - Liquid Temperature Probe

    PT100 - Liquid Temperature Probe

    PT100 - Liquid Temperature Probe
    £68.00
    £81.60 inc. VAT
    £68.00 £68.00
    £81.60 inc. VAT
  • NTC Thermistor Waterproof Temperature Probe with Lumberg Connector

    NTC Thermistor Waterproof Temperature Probe with Lumberg Connector

    NTC Thermistor Waterproof Temperature Probe with Lumberg Connector
    £43.50
    £52.20 inc. VAT
    £43.50 £43.50
    £52.20 inc. VAT
  • T-shaped NTC Thermistor Corkscrew Probe

    T-shaped NTC Thermistor Corkscrew Probe

    T-shaped NTC Thermistor Corkscrew Probe
    £125.00
    £150.00 inc. VAT
    £125.00 £125.00
    £150.00 inc. VAT
  • 100mm Waterproof Stainless Steel Therma 20 Penetration Probe

    100mm Waterproof Stainless Steel Therma 20 Penetration Probe

    100mm Waterproof Stainless Steel Therma 20 Penetration Probe
    £62.00
    £74.40 inc. VAT
    £62.00 £62.00
    £74.40 inc. VAT
  • Air or Gas Wire Temperature Probe

    Air or Gas Wire Temperature Probe

    Air or Gas Wire Temperature Probe
    £30.00
    £36.00 inc. VAT
    £30.00 £30.00
    £36.00 inc. VAT
  • PT100 - Liquid Temperature Probe 2000mm

    PT100 - Liquid Temperature Probe 2000mm

    PT100 - Liquid Temperature Probe 2000mm
    £144.00
    £172.80 inc. VAT
    £144.00 £144.00
    £172.80 inc. VAT
  • PT100 - Air/Gas Wire Probe

    PT100 - Air/Gas Wire Probe

    PT100 - Air/Gas Wire Probe
    £55.50
    £66.60 inc. VAT
    £55.50 £55.50
    £66.60 inc. VAT
  • Therma 22 Air or Gas Probe

    Therma 22 Air or Gas Probe

    Therma 22 Air or Gas Probe
    £38.50
    £46.20 inc. VAT
    £38.50 £38.50
    £46.20 inc. VAT
  • Rigid Between Pack Therma 22 Probe

    Rigid Between Pack Therma 22 Probe

    Rigid Between Pack Therma 22 Probe
    £55.50
    £66.60 inc. VAT
    £55.50 £55.50
    £66.60 inc. VAT
  • PT100 - DIN Liquid Temperature Probe

    PT100 - DIN Liquid Temperature Probe

    PT100 - DIN Liquid Temperature Probe
    £100.00
    £120.00 inc. VAT
    £100.00 £100.00
    £120.00 inc. VAT
  • PT100 - Penetration Probe with T-shaped Handle - 4 mm

    PT100 - Penetration Probe with T-shaped Handle

    PT100 - Penetration Probe with T-shaped Handle
    £78.00
    £93.60 inc. VAT
    £78.00 £78.00
    £93.60 inc. VAT
  • Air or Gas Wire NTC Temperature Probe

    Air or Gas Wire NTC Temperature Probe

    Air or Gas Wire NTC Temperature Probe
    £23.50
    £28.20 inc. VAT
    £23.50 £23.50
    £28.20 inc. VAT
  • Burger Temperature Probe - 12 mm

    Burger Temperature Probe

    Burger Temperature Probe
    £52.00
    £62.40 inc. VAT
    £52.00 £52.00
    £62.40 inc. VAT
  • New
    Weighted Griddle Surface Probe

    Weighted Griddle Surface Probe

    Weighted Griddle Surface Probe
    £150.00
    £180.00 inc. VAT
    £150.00 £150.00
    £180.00 inc. VAT

Frequently Asked Questions

What is the difference between a thermocouple, thermistor, and RTD probe?

Thermocouples offer the widest temperature range and fastest response. Thermistors provide excellent accuracy for food and everyday applications. RTD/PT100 probes deliver the highest accuracy and long-term stability for laboratory, calibration, and critical process measurements.

How do I recalibrate my thermometers and probes?

You can send your equipment to ETI’s UKAS calibration laboratory for accredited recalibration. We will return your instruments to you within their specified accuracy range and with a new calibration certificate.

Learn more about our UKAS calibration services.

Can I use the same probe for different applications?

Some probes are versatile enough for multiple uses, but specialist probes often provide more accurate and reliable results. For example, a surface probe is better suited to measuring hot plates than a standard immersion probe.

What probe do I need for food temperature measurements?

For food safety checks, penetration or immersion probes are the most common choice. Thermistor probes are particularly popular because of their high accuracy in food temperature ranges.

How do I choose the right temperature probe?

Start with the sensor type, as this defines performance.

  • Thermocouple – fast, wide temperature range, robust. Ideal for general industrial and food applications.
  • Thermistor – very fast and highly accurate, but over a narrower range. Common in food and laboratory use.
  • RTD (Pt100 / Pt1000) – highest accuracy and stability. Best for precision measurement and calibration environments.

Once you have chosen your sensor type, select the probe style based on the application:

  • Penetration for solids and food products
  • Immersion for liquids
  • Air probes for ambient monitoring
  • Surface probes for plates, grills and equipment

Then consider response time, durability, and whether certification or calibration is required for compliance.

Read our probe buying guide to learn more.