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.
Using a hygrometer, test the temp and humidity in a variety of places in your fridge, especially the vegetable drawers. You ideally want an average temperature in your refrigerator of about 4-5 degrees C (37-40 degrees F), and a temperature of about -18 to -17 degrees C in your freezer (0-4 degrees F).