Which of the following statements about infrared thermometers is INCORRECT?

The statement regarding infrared thermometers taking accurate internal food temperatures is incorrect because these devices measure the surface temperature of an object, rather than its internal temperature. Infrared thermometers work by detecting the infrared radiation emitted from the surface of an object, which gives a quick and effective way to gauge temperature, particularly for foods, without contact.

However, they do not penetrate the food to measure internal temperatures, which is crucial for ensuring food safety, especially when cooking meats or casseroles, where it is essential to know that the center has reached a safe temperature to kill harmful pathogens. For this purpose, a probe thermometer is more suitable, as it can provide accurate readings of the food's internal temperature.

The other statements accurately reflect the characteristics of infrared thermometers: they are indeed effective for quick surface temperature readings and reduce the risk of cross-contamination since they do not require direct contact with the food.