Bottle Thermometer, Application Freezers, Ultra-Low Freezers, -30 Degrees to 1 Degrees C, Clear Enviro-Safe(R) Liquid, Bottle Fill Enviro-Safe(R) Liquid - 30 mL, NIST-Traceable, PFA-Coated Glass, 5 mm W x 145 mm H, Celsius, PFA-Coated