Thermco ACCI300S ACCU-SAFE Enclosed Chamber Bottle Spirit Filled Thermometer for Incubators, 180mm Height, 15 to 30&deg;C Range, 0.1&deg;C Division NIST Certified & Individually Serialized Certificate Provided with each Thermometer Kit Spirit Filled Thermometers Thermometers are Fluoropolymer Coated for Protection Unbreakable Bottle filled with Non Toxic Liquid Thermometers in 0.1C - 0.5C and 1.0 degrees_celsiuss, Medical, Science, and R&D Industries