Are mercury thermometers The most accurate?
When used correctly, the digital thermometer is accurate enough to meet daily needs and safer than the mercury thermometer. More importantly, the temperature measurement is only a reference, whether to administer medicine to children or take them to the hospital depends on the judgment of symptoms and feelings.
How do I know if my mercury thermometer is accurate?
Confirm that the thermometer reads the boiling point at your elevation. If you’re at sea level, then an accurate thermometer should read 212 °F (100 °C) when you take this measurement. If you’re at a different elevation, then confirm that the reading lines up with the correct boiling point.
How long should a mercury thermometer be in your mouth?
ORAL TEMPERATURE After shaking the mercury down, place the thermometer under the child’s tongue, with the bulb toward the back of the mouth. Tell your child to keep the lips firmly closed, but not to bite the thermometer. 3. Leave the thermometer in place for 3 minutes.
Why are mercury thermometers no longer used?
The reason: Mercury released into the environment from a broken thermometer is highly poisonous. Pure mercury and its compounds can cause neurological problems and other ailments in people exposed to them.
How long should you keep a mercury thermometer in your mouth?
After shaking the mercury down, place the thermometer under the child’s tongue, with the bulb toward the back of the mouth. Tell your child to keep the lips firmly closed, but not to bite the thermometer. 3. Leave the thermometer in place for 3 minutes.
How many minutes does a mercury thermometer take?
3 to 4 minutes
Shake the thermometer so that the mercury inside goes below 36°C (96.8°F). Carefully place the tip of the thermometer under your child’s tongue. With your child’s mouth closed, leave the thermometer in place for 3 to 4 minutes. Remove the thermometer and read the temperature.
How long should I keep a mercury thermometer in my mouth?
You should keep your mouth closed during this time. Place the thermometer tip under the tongue. Hold the thermometer in the same spot for about 40 seconds. Readings will continue to increase and the F (or C) symbol will flash during measurement.
Do mercury thermometers lose accuracy over time?
Mercury thermometers cannot be adjusted after calibration. The actual temperature must be calculated by applying corrections to the measured temperature. This takes time and is susceptible to calculation error.
Is 99.4 a fever?
Normal body temperature ranges from 97.5°F to 99.5°F (36.4°C to 37.4°C). It tends to be lower in the morning and higher in the evening. Most healthcare providers consider a fever to be 100.4°F (38°C) or higher. A person with a temperature of 99.6°F to 100.3°F has a low-grade fever.
Can I still use a mercury thermometer?
Although mercury thermometers have been mostly phased out of daily home use, the tool, which was invented in the 1700s by Gabriel Daniel Fahrenheit, remains a standard measuring device for many industries, including regulating the temperature of a chemical concoction being made in an industrial lab, and monitoring the …
Does a mercury thermometer go bad?
Thermometers do not expire, but they do have to eventually be replaced. Digital thermometers will last about 3 to 5 years, while mercury thermometers will last indefinitely as long as they aren’t cracked or damaged.
How much time should we keep mercury thermometer in mouth?
Breathe through the nose. Use the lips to hold the thermometer tightly in place. Leave the thermometer in the mouth for 3 minutes or until the device beeps.
Can an old thermometer be inaccurate?
No thermometer will provide accurate results if it’s used incorrectly. Never use a thermometer on a person that is meant for another purpose, such as a laboratory or meat thermometer. These won’t provide accurate readings.
Can mercury thermometers be wrong?
Although accurate and repeatable, mercury thermometers are fragile. The risk of a mercury spill poses potential hazards to the environment and to the health of personnel.
Which type of thermometer is the most accurate?
Oral or Rectal Digital Thermometers. In the past,the tips of oral and rectal thermometers were different from each other.
Which thermometer is more accurate?
Digital thermometers are more advanced types of thermometers, and when used correctly, provide the most accurate results. They are also easy to use, cost-friendly, and are widely available. These thermometers typically operate using heat sensors, which help measure the temperature of the human body.
Does Mercury in a thermometer go bad?
Thermometers do not expire, but they do have to eventually be replaced. Digital thermometers will last about 3 to 5 years, while mercury thermometers will last indefinitely as long as they aren’t cracked or damaged. Do mercury thermometers lose accuracy over time? Mercury thermometers cannot be adjusted after calibration.
What does mercury do in a thermometer?
Never use a vacuum cleaner to clean up mercury. The vacuum will put mercury into the air and increase exposure.