Tempa·DOT™ Disposable Oral Thermometer 99 to 104 °F Color Dots Display (144485_BX) 100/BXEach dot changes color from tan to blue at a specific temperature relative to the melting point of the specific chemical mixture in the dot Tempa DOT AX thermometers are specially designed with an adhesive strip to hold themselves in place in the axillary Disposable to eliminate time and labor spent on disinfection, recalibration, recharging and repair of electronic and tympanic units, and eliminate expense and risk associated with toxic mercury