Disposable single-use thermometer made of White PP with Urethane and Clear PETG. Non-breakable, no calibration or batteries required. Non-toxic, mercury-free, latex-free, non-sterile. Accuracy: +/-0.2 degree F or +/- 0.1 degree C. Shelf Life: 5 years from the date of manufacture. Storage: No climate controlled storage required. Range: 96.0 degree F to 104.8 degree F or 35.5 degree C to 40.4 degree C. Bottom is White PP w/ Urethane + Top is Clear PETG.