Thermistor Test Cap -18°C

The ETI Thermistor Test Cap is a convenient, UKAS-certified accessory that enables instant verification of your Therma 20 or Therma 22 (and equivalent thermistor-based thermometers). Each cap is pre-calibrated to one of five standard temperatures (−18 °C, 0 °C, 3 °C, 70 °C, or 100 °C) and offers a guaranteed measurement uncertainty of ±0.1 °C, ensuring your thermometer performs within specification.

To use, simply plug the test cap into the instrument’s thermistor socket and confirm the display matches the cap’s certified temperature—an easy and reliable check for calibration drift. Each unit is supplied with a UKAS certificate of calibration, delivered 10–14 days post-order.

Key Features:

• UKAS Certified Calibration
  Verifies thermometer accuracy with ±0.1 °C uncertainty. Multiple Temperature Points
  Available at −18 °C, 0 °C, 3 °C, 70 °C, and 100 °C to suit verification protocols.

• Instant Plug‑and‑Check Use
  No external equipment needed—just plug into the thermometer and read the display.

• For Therma 20/22 & Equivalent
  Compatible with these ETI models and other thermistor-based instruments. Made in the UK, Guaranteed
  Designed and calibrated in the UK with two-year warranty.