This H-B Instrument FRIO-Temp Enviro-Safe incubator thermometer has a temperature range of 15 to 50°C. The certified Enviro-Safe thermometer is designed for use in incubators. Featuring non-toxic, non-hazardous, biodegradable Enviro-Safe EnviroKleen certified environmentally safe green liquid, each thermometer has accuracy equivalent to mercury thermometers, but without the hazards. Each thermometer is calibrated to NIST and DKD standards at specific temperature points and includes a detailed laminated Report of Calibration stating corrections to two-tenths of the smallest division. Also includes Enviro-Safe clear liquid filled 30mL recyclable plastic bottle, Velcro hook and loop fastener, and magnetic attachment. Thermometer is tested and certified in our triple accredited ISO/IEC 17025:2005, A2LA accredited laboratory. RoHS compliant. Individually packaged in recyclable packing. Made in the USA. Individually serialized. Application: Incubator. Range: 15 to 50°C. Divisions: 0.5°. Length: 135mm. Accuracy: 0.5°. Calibration points: 37°C. Bottle Size: 30mL. Thermometer Liquid Fill: Enviro-Safe Green. Traceable to NIST: Yes. Traceable to DKD: Yes. PTFE safety coated: No. 5/Case. H-B Instrument #: 20720C.