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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  • Thermocouple Probe for Liquids and Solids - type K

    Thermocouple Probe for Liquids and Solids

    Thermocouple Probe for Liquids and Solids
    £32.00
    £38.40 inc. VAT
    £32.00 £32.00
    £38.40 inc. VAT
  • Long T-Shaped Penetration Probe (1, 1.4 or 2 m) - 1000 mm

    Long T-Shaped Penetration Probe (1, 1.4 or 2 m)

    Long T-Shaped Penetration Probe (1, 1.4 or 2 m)
    £99.00
    £118.80 inc. VAT
    £99.00 £99.00
    £118.80 inc. VAT
  • 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
  • Waterproof Thermocouple Penetration Probe - Black

    Waterproof Thermocouple Penetration Probe

    Waterproof Thermocouple Penetration Probe
    £42.00
    £50.40 inc. VAT
    £42.00 £42.00
    £50.40 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
  • Short T-Shaped Penetration Probe (100 or 300 mm) - 300 mm

    Short T-Shaped Penetration Probe (100 or 300 mm)

    Short T-Shaped Penetration Probe (100 or 300 mm)
    £59.00
    £70.80 inc. VAT
    £59.00 £59.00
    £70.80 inc. VAT
  • Fast Response Temperature Probe - straight lead

    Fast Response Temperature Probe

    Fast Response Temperature Probe
    £34.50
    £41.40 inc. VAT
    £34.50 £34.50
    £41.40 inc. VAT
  • Temperature Probe - Extended Penetration - type K

    Temperature Probe - Extended Penetration

    Temperature Probe - Extended Penetration
    £37.00
    £44.40 inc. VAT
    £37.00 £37.00
    £44.40 inc. VAT
  • Miniature Needle Probe - type K

    Miniature Needle Probe

    Miniature Needle Probe
    £48.00
    £57.60 inc. VAT
    £48.00 £48.00
    £57.60 inc. VAT
  • High Temperature flexible Thermometer Probe - type K

    High Temperature flexible Thermometer Probe

    High Temperature flexible Thermometer Probe
    £43.00
    £51.60 inc. VAT
    £43.00 £43.00
    £51.60 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
  • Needle Penetration Temperature Probe - type K

    Needle Penetration Temperature Probe

    Needle Penetration Temperature Probe
    £34.50
    £41.40 inc. VAT
    £34.50 £34.50
    £41.40 inc. VAT
  • Heavy Duty NTC Thermistor Probe with T-shaped Handle 1000mm

    Heavy Duty NTC Thermistor Probe with T-shaped Handle 1000mm

    Heavy Duty NTC Thermistor Probe with T-shaped Handle 1000mm
    £97.00
    £116.40 inc. VAT
    £97.00 £97.00
    £116.40 inc. VAT
  • Waterproof T Type Penetration Probe

    Waterproof T Type Penetration Probe

    Waterproof T Type Penetration Probe
    £50.50
    £60.60 inc. VAT
    £50.50 £50.50
    £60.60 inc. VAT
  • Sous-Vide Temperature Probe - 60 mm

    Sous-Vide Temperature Probe

    Sous-Vide Temperature Probe
    £39.00
    £46.80 inc. VAT
    £39.00 £39.00
    £46.80 inc. VAT
  • Q Series Penetration Probe - 64 mm

    Q Series Penetration Probe

    Q Series Penetration Probe
    £48.00
    £57.60 inc. VAT
    £48.00 £48.00
    £57.60 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
  • High Temperature Mineral Insulated Probe - 180 mm

    High Temperature Mineral Insulated Probe

    High Temperature Mineral Insulated Probe
    £39.00
    £46.80 inc. VAT
    £39.00 £39.00
    £46.80 inc. VAT
  • Fast Response Temperature Probe T Thermocouple - straight lead

    Fast Response Temperature Probe T Thermocouple

    Fast Response Temperature Probe T Thermocouple
    £34.50
    £41.40 inc. VAT
    £34.50 £34.50
    £41.40 inc. VAT
  • T-shaped Penetration Probe 100mm - type K

    T-shaped Penetration Probe 100mm

    T-shaped Penetration Probe 100mm
    £48.50
    £58.20 inc. VAT
    £48.50 £48.50
    £58.20 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
  • High Temperature Thermometer Probe - type K

    High Temperature Thermometer Probe

    High Temperature Thermometer Probe
    £42.00
    £50.40 inc. VAT
    £42.00 £42.00
    £50.40 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

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.