This H-B Instrument FRIO-Temp Enviro-Safe blood bank thermometer with PTFE safety coating has a temperature range of -5 to 20°C. The certified Enviro-Safe thermometer is designed for use in freezers. Featuring non-toxic, non-hazardous, biodegradable Enviro-Safe EnviroKleen certified environmentally safe liquid, each thermometer has accuracy equivalent to mercury thermometers, but without the hazards. Includes Enviro-Safe clear liquid filled 30mL recyclable plastic bottle, Velcro hook and loop fastener, and magnetic attachment. Thermometer is tested and calibrated in our triple accredited ISO/IEC 17025:2005, A2LA accredited laboratory against equipment whose calibration is traceable to NIST and DKD. RoHS compliant. Individually packaged in recyclable packaging with multi-language instructions and multi-language Statement of Accuracy indicating accuracy traceable to NIST and DKD. Made in the USA. Individually serialized. Application: Blood Bank. Range: -5 to 20°C. Divisions: 0.5°. Length: 135mm. Accuracy: 0.5°C. Bottle Size: 30mL. Thermometer Liquid Fill: Enviro-Safe. Traceable to NIST: Yes. Traceable to DKD: Yes. PTFE safety coated: Yes. 5/Case. H-B Instrument #: 20717T.