Each 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 cleanup and disposal
No risk of toxic mercury exposure makes this thermometer a nontoxic and safe choice for patients of all ages