Hanna Calibration-Check Key at -0.4°F (±0.8°F) - HI765-004F

HI765-004F Calibration-Check Key at -0.4°F (±0.8°F) by Hanna Instruments

Test key at -4°F Allows a quick calibration check of the thermistor thermometers. Simply connect the key to the meter and verify that reading is within the key value ±0.4°C (or ±0.8°F). If not, contact the nearest HANNA® Customer Service Center for Calibration.