How pop up timers work?

Answer 1

Pop up timer, also named disposable cooking thermometer, it normally has four parts:

1. The outer case;

2. The little stick that pops up;

3. A spring;

4. The internal thermosensitive organic material.

The thermosensitive organic material is solid at room temperature and turns to a liquid (melts) at about pre-defined 185 degrees Fahrenheit (85 degrees Celsius). When these thermosensitive material turns to a liquid, it frees the end of the stick that had been trapped in the thermosensitive material. The spring pops the stick up and you know the turkey is done!

Of course, for different size turkey, we can select to use different pre-defined temperature disposable cooking thermometers, and it is also for beef, pork and chicken, etc.

For more detail, please search "disposable cooking thermometer manufacturer" in Google, and then you will find the real source informations.