Feature●Black liquid against lead-free, yellow back glass for easy readability and fewer reading errors●Ideal for use in chemical/petrochemical laboratories, universities, scientific institutions, food and beverage processing, pharmaceutical and medical industries, dairies, breweries and distilleries●Manufactured and tested by our USA quality team●Traceable to NIST●Includes multi-language (English, French, German, Italian, Portuguese, and Spanish) Statement of Accuracy and Traceability, non-roll fitting and individual serial numberDescription EnviroKleen certified thermometers feature black, non-toxic, biodegradable, Enviro-Safe liquid. Black liquid against lead-free, yellow back glass for easy readability and fewer reading errors. Ideal for use in chemical/petrochemical laboratories, universities, scientific institutions, food and beverage processing, pharmaceutical and medical industries, dairies, breweries and distilleries. Manufactured and tested by our USA quality team.