H-B DURAC Plus B60600-0600 Refrigerator Verification Thermometer; -5 to 15C Verify sample temperatures in refrigerators Accurate temperature reading without sample contamination is achieved by using the filled bottle (included), which mimics the sample Insert thermometer into the bottle and place near the samples for best results Thermometers contain organic liquid, or EnviroKleen certified Enviro-Safe liquid; feature permanently fused markings and lead free glass PFA coating on select thermometers safely contain glass and liquid in case of breakage Manufactured and tested by our USA quality team; individually serialized Includes multi-language (English, French, German, Italian, Portuguese, and Spanish) Statement of Accuracy and Traceability