How often should you carry out a calibration check on probe thermometers?

Probe thermometers should be calibrated regularly to ensure accuracy, typically every 6 to 12 months, or more frequently if they are used in critical applications or exposed to extreme conditions. Additionally, they should be calibrated after any significant impact or if there are signs of malfunction. Performing a calibration check before each use is also advisable for ensuring precise measurements in critical situations.