Medical technicians include: 1  Cardiovascular technicians, whose duties involve performing echocardiograms, or sonograms of the hearts of patients. 2  Dialysis technicians who are trained to operate dialysis equipment for people with failing kidneys.
1 Maintain your refrigerator between 34Â°F and 40Â°F. Refrigerator thermometers are available to help monitor the temperature inside the appliance. See more on thermometers.  Use food quickly, and don't expect food to remain high-quality for the maximum length of time.
The best temperature for a refrigerator is at or below 40 degrees Fahrenheit, according to the United States Food and Drug Administration. Maintaining an appropriate temperature in a refrigerator reduces the potential for the growth of food-borne microorganisms, including Salmonella, listeria, C. botulinum and E. coli.