For children born before March 2013, parents need to apply for unabridged birth certificates to replace the old abridged birth certificate that contained only the name and ID number of the newborn baby and the mother and was easy to reproduce illegally.
Read the refrigerator thermometers in increments of one-hour intervals for a period of four to five hours to see whether the internal temperature is consistent. Adjust the refrigerator's temperature regulator so that the temperature is under 40 degrees Fahrenheit.
After you have done the first calibration, open and, quickly, put the hygrometer in the next bag. Give it time to stabilize. This can take from 40 minutes to six hours. You can tell when it is ready for calibration because the reading stays the same for long periods of time.