Size:-20 to 35 degree F Range This FRIO-Temp precision verification freezer thermometer has a range of range -20 to 35°F. It is used to verify sample temperatures in Freezers, Refrigerators, Incubators and Ovens with traceability to NIST, DKD/PTB and most standards through ILAC. Thermometer features a PTFE safety coating . Comes with a multi-language (English, French, German, Italian, Portuguese and Spanish) Statement of Accuracy indicating accuracy traceable to NIST and DKD/PTB. Individually serialized. Tested and calibrated in our exclusive triple accredited/registered ISO/IEC 17025:2005, A2LA accredited laboratory against equipment whose calibration is traceable to NIST. Thermometer features environmentally safe non-toxic, non-hazardous, biodegradable Enviro-Safe liquid EnviroKleen certified by ChemTel, an independent laboratory, and has the same accuracy as similar mercury-filled thermometers, but unlike mercury-filled thermometers these are 100% environmentally safe. Ideal for chemical industry, petrochemistry, pharmaceutical, medical, cosmetic, producers of chemicals, university, dairies, breweries, distillers, beer cellars, refrigeration house, hot houses, scientific institutes, blood banks, refrigeration/freezer/incubator/oven equipment producers and producers of laboratory equipment. Individually packaged to prevent breakage. Made in USA. Type: Freezer. Thermometer Fill: Enviro-Safe. Bottle Fill: Enviro-Safe. Range: -20 to 35°F. Divisions: 1. Accuracy: 1°F. Length: 135mm (5.3in). Bottle Size: 30mL. Research, industrial and healthcare professionals rely on SP Scienceware for their sample handling needs. Sold worldwide, Bel-Art and H-B Instrument brand laboratory supplies include over 5,000 items from safety wash bottles to fume hoods, thermometers, racks, desiccators, hydrometers, ice buckets, scoops and spoons. Custom calibration services, plastic molding, specialty coatings and wire manufacturing are also available. Wilmad-LabGlass brand laboratory glassware complements Bel-Art and H-B Instrument with over 7000 items including NMR and EPR consumables and specialty glassware, as well as custom fabrication for individual glassware, glass repair services and OEM glass parts. SP Scienceware is a division of Warminster, PA based SP Industries which also include SP Scientific laboratory, thermal management, and pharmaceutical production equipment and SP Ableware aids for daily living.