Why a clinical thermometer should not be sterilized by boiling?

Explain why it is not advisable to sterilise a clinical thermometer on boiling water at normal atmospheric temperature. A clinical thermometer has small temperature range. The glass will crack/burst due to excessive pressure created by expansion of mercury.

Also know, why does a clinical thermometer break when kept in boiling water?

When a thermometer is placed in boiling water, the mercury is heated up and it in turn heats the inner portion of the glass. Therefore, the inside layer of glass expands but not the outer layer and hence it breaks.

Also, how do you sterilize a clinical thermometer? A quick, easy way to sterilize the thermometer is to wipe it down with alcohol. You can use alcohol wipes or soak a soft, disposable pad or cotton ball in alcohol. For small crevices, use a cotton swab soaked in alcohol. Let the alcohol dry completely, or rinse the tip of the thermometer in cool water before using it.

Hereof, what will happen if a clinical thermometer is dipped in boiling water?

Clinical thermometers have a very small range, being from 20ºC to 45ºC in general. If placed in boiling water, which is 100 degrees, damage will be caused to the thermometer, either melting it or changing the properties of the catalyst inside.

How do you sterilize a thermometer without alcohol?

It's important to clean the thermometer after each use, but how you clean it depends on what type of thermometer you have. For glass thermometers, wash it with soap and cool water, then rinse and dry. Or you can it wipe with a cloth soaked in alcohol. Allow it to air dry.

Related Question Answers

Can a clinical thermometer be used to measure boiling water?

We cannot use a clinical thermometer to measure the temperature of boiling water because the range in a clinical thermometer varies only between 35 degree celsius to 42 degree celsius the temperature of boiling water will rise above this limit, a clinical thermometer cannot be used to measure its temperature.

Can you put a thermometer in boiling water?

To test in boiling water: Bring a pot of water** to a rolling boil. Insert the thermometer stem at least an inch deep in the water, without letting it touch the sides or bottom of the pot. The thermometer is accurate if it registers 212° F or 100° C.

Why alcohol is not used in clinical thermometer?

Alcohol is not used in clinical thermometer: i) It cannot measure the high temperatures because of its low boiling point.

What do you think will happen if you dip clinical thermometer in a cup of hot boiling tea?

The tea will not be harmed ( unless you use a thermometer that only reads to body temperature, and are foolish enough to leave the thermometer in the hot tea while the thread oh alcohol expands beyond the limits of the thermometer and breaks the thermometer, causing the alcohol to leak out into the tea).

Can we measure the temperature of hot milk with clinical thermometer?

No. We can not use clinical thermometer to measure the temperature of hot milk. If the temperature of boiling milk is too hot it will break.

What is the function of kink?

A 'kink' in the glass tube which breaks the mercury as it contracts, storing the highest temperature reading. The glass tube is shaped like a lens to magnify the thin mercury thread. Shaking the thermometer resets the mercury back into the bulb.

What will happen if the kink is not present in the clinical thermometer?

Answer: Because of the kink present in the thermometer, the mercury does not fall or rise in a clinical thermometer when taken out of the mouth.

What will happen if scale is not present in a clinical thermometer?

ANSWER: It will get hard to measure the temperature without the scale.. The only difference is that the operater will no longer be able to extract any useful information..

What is the function of kink in a clinical thermometer?

Specific features of the liquid-in-glass clinical thermometer are: A 'kink' in the glass tube which breaks the mercury as it contracts, storing the highest temperature reading. The glass tube is shaped like a lens to magnify the thin mercury thread. Shaking the thermometer resets the mercury back into the bulb.

Why does the level of mercury not fall back when the clinical thermometer is removed from our mouth?

Accepted Answer: In clinical thermometers, there is a small bent at the bottom of the tube containing mercury. The kink prevents the mercury level from falling down on its own. Due to this, the temperature does not decrease immediately after removing the thermometer from the mouth.

Why do we jerk a clinical thermometer before use?

A few sharp jerks are given to clinical thermometer before using it. Why is it done so? Answer: The jerk to the thermometer will allow the mercury in or above the kink to flow into the bulb so that the mercury level is below normal temperature.

Which thermometer does not use mercury?

Spirit thermometers use a non-toxic alcohol instead of mercury to register the temperature. Like liquid mercury, the alcohol expands in volume as it gets warmer, causing the liquid to move up the thin tube inside the glass thermometer. Digital thermometers contain a device called a thermoresistor.

What is difference between laboratory and clinical thermometer?

Differences: Clinical thermometer is used to measure body temperature however laboratory thermometer is not used for the purpose of measuring body temperature. The temperature range of clinical thermometers is 35°C-42°C and that of laboratory thermometers is -10°C-110°C.

What will happen if we over heat an alcohol thermometer?

With moderate over-temperature the liquid merely expands and fills this space. When cooled the liquid can simply shrink back down. The liquid will start to generate a vapor pressure inside the closed space, and that pressure will rise a lot at high temperature.

Can digital thermometer be washed?

A. Clean your digital thermometer before and after you use it with either rubbing alcohol or lukewarm soapy water, then rinse with cool water, says Parents advisor Jennifer Shu, MD, coauthor of Heading Home with Your Newborn: From Birth to Reality.

How do you clean a thermometer probe?

Probe Tip Thermometers - Clean the probe tip with an alcohol swab before and after each use. Use a soft, dry cloth to clean the plastic parts of the thermometer. Never use abrasive cleaning agents, thinners or benzene for cleaning. Clean the plastic parts and display of the thermometer with a soft, dry cloth.

Can you clean a thermometer with hydrogen peroxide?

Besides cleaning, hydrogen peroxide can be used to disinfect items around your home. Just spray it on, allow the bubbles to subside and repeat. You can also soak things in it to disinfect them like to clean a thermometer with hydrogen peroxide (yes any type of thermometer).

How do you store a thermometer?

We recommend the thermometer be stored in the protective cover if product was provided with one. Do not expose the thermometer to extreme temperatures, humidity or direct sunlight. Store at a room temperature range of 68 to 79 degrees/20 to 26 Celsius.

How long do you keep a thermometer in your mouth?

3 minutes

How should a thermometer be dried after washing rinsing and sanitizing it?

To clean a fork thermometer, avoid submerging the device into the water. Instead, simply clean the tines with soap and water to remove food particles and grease. Next, carefully, rinse and dry the tines with a soft towel or paper towel to prepare it for sanitizing.

How do you take your temperature?

Ways to Take a Temperature

1. Rectal. The thermometer is placed in the child's bottom.
2. Oral. The thermometer is placed in the mouth under the tongue.
3. Axillary. The thermometer is placed in the armpit.
4. Tympanic. The thermometer is placed in the ear.
5. Temporal artery. The thermometer scans the surface of the forehead.

Is 99 a fever?

The well-known 98.6 degrees, is a normal temperature taken by mouth. ”In other words, an oral temperature of 100 degrees just before bedtime may actually be normal. An axillary temperature of 99 degrees in the morning may be the start of a fever.” Anything over 100.4 degrees F is considered a fever.

When should a thermometer be cleaned?

A quick, easy way to sterilize the thermometer is to wipe it down with alcohol. You can use alcohol wipes or soak a soft, disposable pad or cotton ball in alcohol. For small crevices, use a cotton swab soaked in alcohol. Let the alcohol dry completely, or rinse the tip of the thermometer in cool water before using it.

What is the normal body temp?

98.6°F

Does hydrogen peroxide disinfect?

Hydrogen peroxide is considered an environmentally safe alternative to chlorine-based bleaches as it breaks down into water and oxygen. Commercially available 3% hydrogen peroxide is considered a stable and effective disinfectant by the CDC when used on inanimate objects.

What is the normal body temperature for adults?

The average normal body temperature is generally accepted as 98.6°F (37°C). Some studies have shown that the "normal" body temperature can have a wide range, from 97°F (36.1°C) to 99°F (37.2°C). A temperature over 100.4°F (38°C) most often means you have a fever caused by an infection or illness.

What is the most accurate thermometer?

Rectal thermometers are still considered the gold standard—they offer the most reliably accurate measurement of core body temperature. Roberts explained that rectal thermometers are recommended for use with newborns because “they are most accurate and it is important to know if a newborn really has a fever.

What is considered a fever?

Fever facts Although a fever (pyrexia) could be considered any body temperature above the normal temperature of 98.6 degrees Fahrenheit (98.6 F or 37 C), medically, a person is not considered to have a significant fever until the temperature is above 100.4 F (38.0 C).

Is isopropyl alcohol the same as rubbing alcohol?

Rubbing alcohol is either isopropyl alcohol or ethyl alcohol that has been mixed with water. Isopropyl-based rubbing alcohol doesn't contain the ethyl alcohol that you need in alcoholic drinks; and ethyl-based rubbing alcohol uses denatured alcohol, which includes at least one bitter poison that renders it toxic.