How Is A Glass Thermometer Read?

How Is A Glass Thermometer Read??

Reading the glass thermometer (that is determining the temperature shown) is done by holding the thermometer horizontally by the stem end (the end opposite the bulb) at eye level and rotating the thermometer until the mercury in the shaft can be clearly seen.

How do you read a mercury glass thermometer?

How is a glass thermometer read quizlet?

how is a glass thermometer read? it should be held by the stem at eye level. Then the thermometer can be rotated until the mercury column can be seen inside the glass rod.

How do you read a glass?

How do you read a thermometer?

Using a digital thermometer
  1. Clean the tip with cold water and soap then rinse it.
  2. Turn the thermometer on.
  3. Put the tip under your tongue towards the back of your mouth.
  4. Close your lips around the thermometer.
  5. Wait until it beeps or flashes.
  6. Check the temperature on the display.

How do you check temperature with a glass thermometer?

How do I use a glass thermometer?
  1. Take the thermometer out of its holder.
  2. Hold the thermometer by the end opposite the colored (red blue or silver) tip.
  3. Clean the thermometer with soap and warm water or rubbing alcohol. …
  4. Turn the thermometer in your hand until you see the red blue or silver line.

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How do you reset a glass thermometer?

Glass thermometers don’t always reset themselves after you take a temperature. Grab it at the end away from the tip and swing the thermometer back and forth. Check to make sure it goes down below at least 96.8 °F (36.0 °C) it needs to be under the average body temperature.

Why are glass thermometers not recommended?

Liquid in glass thermometers tend to be fragile and hence easily broken can only be used where the liquid column is visible cannot be used for surface temperature measurements cannot be read from a distance and are unsuitable for high temperature measurements.

What is the normal range for an oral temperature?


The average normal oral temperature is 98.6°F (37°C). A rectal temperature is 0.5°F (0.3°C) to 1°F (0.6°C) higher than an oral temperature. An ear (tympanic) temperature is 0.5°F (0.3°C) to 1°F (0.6°C) higher than an oral temperature.

Are glass thermometers more accurate?

As is true with most instruments greater accuracy will likely cost more when measuring temperature. Liquid-in-glass thermometers without mercury are not as accurate so they should be used when less precision and certainty is acceptable. … Electronic thermometers cost more than their mercury offer comparable accuracy.

Are glass thermometers reusable?

Glass thermometers are reusable. Therefore they must be cleaned and disinfected between uses. … Each used thermometer must be carefully washed with soapy cold running water to remove saliva or other body secretions.

How do you read a fever thermometer in adults?

Turn on the digital thermometer. Place the thermometer tip under the tongue. Close the mouth around the thermometer for the recommended amount of time or until the thermometer beep indicates it’s done. Remove the thermometer and read the number.

What is your normal temperature?

Normal Range

For a typical adult body temperature can be anywhere from 97 F to 99 F. Babies and children have a little higher range: 97.9 F to 100.4 F. Your temperature doesn’t stay the same all day and it will vary throughout your lifetime too.

Is 36.9 a high temperature?

Your body’s normal temperature is between 36 and 36.8 degrees Celsius. A high temperature or fever for most people is when your body temperature is 38C or higher.

What are the markings on a thermometer called?

Scale Lines

The scale is the series of lines that are etched into an area to the side of the capillary. The scale allows the temperature to be read off in units of degrees. The type of degree unit depends upon the specific thermometer.

Is 99.1 considered a fever?

Some experts define a low-grade fever as a temperature that falls between 99.5°F (37.5°C) and 100.3°F (38.3°C). According to the U.S. Centers for Disease Control and Prevention (CDC) a person with temperature at or above 100.4°F (38°C) is considered to have a fever.

Is 99.6 considered 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.

Do you add a degree when taking temp under tongue?

Should I add a degree to oral (under the tongue) and axillary (under the arm) readings? Yes for the most accuracy. … Oral and axillary temperature readings are about ½° to 1°F (. 3°C to .

How long should you keep a glass 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.

Do mercury thermometers lose accuracy?

Mercury thermometers cannot be adjusted after calibration. The actual temperature must be calculated by applying corrections to the measured temperature. … A digital thermometer does the math for you—the displayed temperature accurately represents the actual measured temperature.

Why is a mercury in glass thermometer not suitable for measuring a temperature of C?

Physical properties. Mercury thermometers cover a wide temperature range from −37 to 356 °C (−35 to 673 °F) the instrument’s upper temperature range may be extended through the introduction of an inert gas such as nitrogen. … Mercury cannot be used below the temperature at which it becomes solid −38.83 °C (−37.89 °F).

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Why is mercury not used in thermometers anymore?

The reason: Mercury released into the environment from a broken thermometer is highly poisonous. … So government and state agencies have mounted campaigns to end the use of thermometers that contain the liquid metal. Federal and state authorities have lobbied since 2002 for bans on medical mercury thermometers.

What is the most accurate way to take temperature?

Rectal temps are the most accurate. Forehead temps are the next most accurate. Oral and ear temps are also accurate if done properly. Temps done in the armpit are the least accurate.

Is 99.7 a fever in adults?

Fever. In most adults an oral or axillary temperature above 37.6°C (99.7°F) or a rectal or ear temperature above 38.1°C (100.6°F) is considered a fever. A child has a fever when his or her rectal temperature is higher than 38°C (100.4°F) or armpit (axillary) temperature is higher than 37.5°C (99.5°F).

Is a temp of 37.4 OK?

Your normal body temperature is approximately 37C. A fever is usually when your body temperature is 37.8C or higher. You may feel warm cold or shivery. You can find out if you have a fever by using a thermometer to take your temperature.

Is mouth temperature accurate?

Temperatures taken from the armpit are usually the least accurate. For older children and adults oral readings are usually accurate — as long as the mouth is closed while the thermometer is in place.

Which is more accurate digital or glass thermometer?

Digital thermometers are the most accurate way to take body temperature. There are many types including oral rectal and forehead plus many that are multifunctional.

Is mercury thermometer banned?

Since 2001 20 states have banned mercury “fever thermometers” for medical use and regulations tighten every year. … It’s a neurotoxin—exposure can cause tremors partial blindness deafness memory loss and many many other problems—and if mercury does spill it’s very hard to clean up.

Is a glass thermometer more accurate than a digital one?

Our network meta-analysis showed that axillary temperature determined with both mercury and digital thermometers was significantly lower by − 0.65 °C and − 0.67 °C respectively than body temperature measured with rectal mercury-in-glass thermometry while infrared (tympanic temporal artery forehead) devices were …

How do you sterilize a glass thermometer?

Here’s how you clean a digital thermometer.
  1. Wash the tip of the thermometer with cold water.
  2. Wipe down the thermometer with alcohol-based wipes (at least 70% alcohol) or rubbing alcohol.
  3. Rinse the thermometer to remove the alcohol.
  4. Lastly wipe it dry with a soft cloth.
  5. Repeat the entire process once again after use.

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Is taking your temp under your arm accurate?

Underarm (axillary) and forehead temperatures are considered to be the least accurate because they’re taken outside of the body rather than inside. These temperatures can be as much as a full degree lower than oral body temperature.

How many minutes should a mercury thermometer be left in the mouth?

3 minutes

Mouth: Place the probe under the tongue and close the 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.

What is a high temperature for Covid?

The most common symptoms are new: continuous cough. fever/high temperature (37.8C or greater)

Is 96.6 temp too low?

Hypothermia is a serious condition that occurs when you lose too much body heat. For adults a body temperature that dips below 95°F (35°C) is a sign of hypothermia.

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