Mercury free, these thermometers feature blue organic liquid fill against lead-free white back glass. traceable to nist, individually serialized ideal for use in chemical laboratories, universities, scientific institutions, food and beverage processing, petrochemical laboratories, pharmaceutical/medical industry, dairies, breweries and distilleries. include multi-language english, french, german, italian, portuguese, and spanish statement of accuracy and traceability tested and inspected by our usa quality teamshould you require an individual thermometer calibration report, factory calibrated thermometers or custom calibration services are available.