Check the listing for details. TRACEABLE 4227 Digital Therm, Refrigerator/Freezer Plus 3KTV4. Condition: New. Listed at 85.84 USD. Digital Thermometer, (1) Glycol Filled 15 mL Glass Bottle Probe, Multi-Point Calibration, -58 Degrees to 158 Degrees F/-50 Degrees to 70 Degrees C, Application Freezers, Heating Blocks, Incubators, Refrigerators, Water Baths, Alarm Type Max/Min, Resolution 0.1 Degrees F/0.1 Degrees C, Probe Type (1) Bottle, AAA Battery, Temperature Accuracy +/-0.5 Degrees C, Critical Environment Digital Thermometer Accurately monitor temperatures in freezers, water baths, heating blocks, incubators, and refrigerators with this enclosed temperature-buffered sensor. The glycol bottle probe is sealed in a miniature 10mL vaccine bottle filled with nontoxic glycol. The FDA generally recognizes the solution as safe. The bottle and solution insulate sensor from rapid changes. The solution mimics temperature of sa.