Electronic thermometers: It is recommended to calibrate them annually. As precision measuring instruments, regular calibration ensures accuracy.
Glass thermometers (such as gallium indium tin thermometers): According to the "Verification Regulations for Thermometers," the verification cycle should not exceed 3 years. For everyday household use, they can be checked every 2-3 years, or sent for calibration immediately if any abnormalities are found.
Self-test before calibration: Quickly verify annually using the ice-water mixture test method (reading should be within 0℃±0.5℃). Electronic thermometers require checking the battery level and sensor.
