A quick rinse under cold water won't kill the bacteria that can spread to others. This can happen when the glass breaks and mercury is released. Most Common Uses. To prevent possible contamination, stop using your mercury thermometer. Close your lips around the thermometer. Electronic components in the thermometer can take very accurate and fast temperature readings. - unable to close the lips or had surgery in the mouth recently A child younger than 5 may bite the thermometer, breaking it in their mouth. Ensure thermometer is away from people and objects before shaking. 3. Look for the liquid level inside the straw and use a permanent marker to draw a line on the bottle. 1. Educational website from one of the world's leading hospitals, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/ba\/Use-a-Glass-Thermometer-Step-1.jpg\/v4-460px-Use-a-Glass-Thermometer-Step-1.jpg","bigUrl":"\/images\/thumb\/b\/ba\/Use-a-Glass-Thermometer-Step-1.jpg\/aid10921315-v4-728px-Use-a-Glass-Thermometer-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"

\u00a9 2021 wikiHow, Inc. All rights reserved. You can use one to detect a fever, and people also often use them in cooking in order to determine if a roast is cooked to the proper temperature. 40 ($8.20/Count) FREE Shipping. If the temperature indicates the person has a fever, you should check it again with a rectal or oral reading, depending on the age of the person, as those are more accurate. Avoid measuring body temperature under the tongue if the person is: Use a squeegee or cardboard to gather mercury beads into small mercury balls. You can also read the packaging to find out what kind you have. Last Updated: April 1, 2019 This method is accurate, but it can be difficult for some kids to hold it in place properly. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Mercury thermometers are utilized in households, laboratory experiments, and industrial applications. Until recently 260° C was the typical limit for non-mercury thermometers. Mercury and alcohol thermometer have their own merits and demerits. Be very careful using a glass thermometer … They can break, releasing small shards of glass and highly poisonous mercury. Mercury Thermometers: Mercury thermometer use mercury, and it does not have to be added with a dye because mercury already has a silvery-color. Warnings. - Infant or child (under the age of 6) How to use iHealth No-Touch Forehead Thermometer PT3? Galinstan thermometers have a silver colored line, but will be marked "mercury-free" when you buy one. Use slow sweeping motions to keep mercury from becoming uncontrollable. One special kind of mercury-in-glass thermometer, called a maximum thermometer, works by having a constriction in the neck close to the bulb. Usually, this process has to be 5-10 mins. Mayo Clinic - Remove the probe cover and/or wipe the thermometer with a dry tissue from stem to bulb. - Read Mercury Thermometer at Eye level - unconscious or not responsive or on seizure precautions. The mercury thermometers were difficult to read and so did not always provide accurate information. 2. Don't use hot water, as you could rupture the thermometer. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. For instance, if the end of the liquid goes past the larger 100 °F (38 °C) mark by 2 smaller lines, then the temperature is 100.4 °F (38.0 °C). You can use a thermometer to check if sugar is being melted or burned and if hot oil is ready for frying foods. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. If you don't clean it, you could introduce germs to the next person who uses it. Shake down the mercury in a glass thermometer before placing it under the tongue. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. Go to source Wipe the thermometer with a dry tissue from stem to bulb. Mercury is toxic if inhaled or if the liquid touches the skin. Mercury-free, these calibrated thermometers conform to ASTM standards for methods specified in the ordering table below. You can also cleanse the thermometer by wiping it down thoroughly with rubbing alcohol and then rinsing it off. Another type is a digital thermometer, which uses electronics to … Digital in-ear thermometers (typically £20 to £40) Ear thermometers are quick and easy to use, taking just a few seconds to get a reading – using infrared technology to measure the temperature inside your ear. Then sprinkle some sulfur powder on the broken mercury thermometer. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. - Rotate the thermometer until you can clearly see the number and the lines between the numbers, much like on a    ruler Alternatives to mercury fever thermometers. There are 15 references cited in this article, which can be found at the bottom of the page. If the worse should happen and the thermometer drops, cracks, or breaks, this is how to need to take care of it. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. These are plastic strips that you place on your child's forehead - they are not accurate so it's best not to use them. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. Sumtm Thermometer, Mercury-free Dual Scale Classic Traditional Glass Accuracy Thermometer for Home New. With the mercury level shows on the calibration, we can read the measurement results. 1. One gram of mercury can contaminate a 20 acre lake, enough to cause a public advisory to be issued on the potential dangers of eating fish caught in that lake. Note: Mercury can move surprising distances on hard-flat surfaces, so be sure to inspect the entire room, including any cracks in … A slight amount of mercury is placed into the base of the thermometer, and as heat warms the base of the thermometer, it increases the mercury level, pushing it up a narrow tube so we can physically read the increase on the thermometer; however, at a slow pace. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Now, place the bulb end of the thermometer under the tongue and ask the person to close his mouth This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. - unable to take commands, confused, combative, or uncooperative If you choose to use a glass thermometer, pick one that is mercury-free such as a Geratherm®. Step-2 Gently press the measurement button to begin the test. Write it down next to the line on the bottle. The mercury thermometer is a classic design for temperature measurement still used by many families. Mercury thermometers are no longer sold in the United States. Avoid mistakes as it could result in inappropriate therapy. - Hold the thermometer at eye level and parallel to the floor. Thermometers that check body temperature in the ear, across the forehead, or have a digital display do not contain mercury. X The main reason they are not longer recommended is that mercury can poison you. Cleanup and disposal after breaking a thermometer. The main reason they are not longer recommended is that mercury can poison you. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. Amid the current public health and economic crises, when the world is shifting dramatically and we are all learning and adapting to changes in daily life, people need wikiHow more than ever. The mercury thermometers were difficult to read and so did not always provide accurate information. Locate visible mercury beads. Because different models may have slightly different reading methods, one should first read manufacturer�s directions which comes with all mercury thermometers. They are also safe, since they can withstand temperature extremes without breaking. Call the doctor if your child is under 3 months and running a fever based on a rectal reading. Whether you have a mercury-filled, digital, or infrared thermometer, it is essential to disinfect it between uses and, most importantly, if shared between family members. Whether you have a mercury-filled, digital, or infrared thermometer, it is essential to disinfect it between uses and, most importantly, if shared between family members. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. read more . At one end of the tube is a reservoir of mercury. Hold the thermometer by the top end and shake it down sharply until the mercury falls below the 35C (95F) mark. After shaking the mercury down, place the thermometer under the child's tongue, with the bulb toward the back of the mouth. Accurate body temperature readings can make a difference in treatment decisions. - Remove cover. It uses the resistance created by a temperature-sensitive metal when an electrical current is passed through it to make a measurement. Each mercury thermometer contains approximately one gram of mercury. The tube is sealed on both sides and from inside her deflated air. Never use a vacuum cleaner to clean up mercury. Every day at wikiHow, we work hard to give you access to instructions and information that will help you live a better life, whether it's keeping you safer, healthier, or improving your well-being. - Handle with care to prevent thermometer from chipping or breaking. Mercury thermometers are designed utilizing the idea that mercury expands with heat. Before Reading a Glass Mercury Thermometer If you have a choice, it's better to use a thermometer without glass. Tell your child to keep the lips firmly closed, but not to bite the thermometer. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Mercury is volatile. and breathe through his nose. When measuring a person's rectal temperature, it helps to use a cream on the thermometer. Because of the low mercury content, potted soil or flour can be used to remove crushed residues. These thermometers use electronic heat sensors to record body temperature. Use a mercury thermometer is easy but requires a bit of practice and skill. Never use a … 91. They're often color-coded on the other end, red for anal and green for oral. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. A new Brown-Spirit thermometer has a maximum range greater than 300° C but the accuracy limit can be ± 5°C at high temperatures. These thermometers are safe to use for people over the age of 5. Digital thermometers are safer than glass thermometers because these do not contain mercury. If wounds are exposed to mercury, it is recommended to see a doctor nearby. Geratherm Mercury Free Oral Glass Thermometer, Pack of 2. $16.40 $ 16. An exception is on the high end of the temperature scale. There are serious health risks if a glass mercury thermometer breaks. Traditional thermometers measure the temperature using mercury, but you can make your own at home with just water and rubbing alcohol. One type of thermometer is a narrow, concealed glass tube containing mercury or alcohol which extends along the tube as it expands. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. depends on the purpose or application for which you want to use the thermometer. When an Oral Temperature should not be taken? Part of the series: Child Care & First Aid. Before Reading a Glass Mercury Thermometer Wait until it beeps or flashes. * Long lines indicate 1 degree or 0.5 degree. Try to steer clear of old-style mercury thermometers – mercury is toxic and will be a pain to clean up if you end up breaking it accidentally. A quick rinse under cold water won't kill the bacteria that can spread to others. While the homemade thermometer can't be used to tell if you have a fever, you can still find out how hot or cold it is around your home. Please consider making a contribution to wikiHow today. 4.3 out of 5 stars 1,695. This article has been viewed 45,567 times. NET Basal Mercury Thermometer is an accurate device to chart basal body temperature of women to predict their fertile period or ovulation (three days). Hold the baby or child still so that the thermometer doesn't break. Be very careful using a glass thermometer to check an axillary temperature on infants and children. Rectal Mercury Thermometer should be shaken down so that the reading is well below 98 degrees F (36.67 degrees C). - Standard precautions like washing hands and wearing gloves if appropriate. Ensure thermometer is away from people and objects before shaking. Alcohol thermometer and mercury thermometer are two types of thermometers that are composed of a bulb filled with a liquid and a capillary tube connected to the bulb. Trustworthy Source If you do still have one of these thermometers, you should contact your local waste department and find how to dispose of hazardous waste properly. Plus, a rectal temperature is the most accurate for children. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. For example, 100.2 degrees is between 100 and 101 while 102 degrees is between 102 and 103. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Glass thermometers can break and cause the person injury, and some contain mercury, which is poisonous; ones containing mercury, in particular, are no longer recommended. This Really Happened. How to Dispose of Mercury if Thermometer Breaks. When choosing a thermometer, consider these options: Digital thermometers. If a mercury thermometer breaks or leaks, it can release toxic vapors. The following are general guidelines for most of the mercury glass thermometers: Children may bite down on a thermometer if it's in their mouths, leading to glass shards and mercury in their mouths, which is why you shouldn't place a glass thermometer in their mouth. * Long lines indicate 1 degree. The thermometer will indicate that it’s ready to be used with a sound, light, or both. - The point where the mercury ends is what the temperature is, How to Check a Temperature Under the Tongue (Orally)? Although currently there are digital thermometers this form of temperature measurement is still very much in demand, in addition to being very simple to use. Infants and children may move suddenly and break the glass thermometer next to their skin. the metal part which comes into contact with the body to measure the temperature. - having difficulty in breathing or receiving oxygen via a mask A non-mercury thermometer is safer because it can't leak mercury. One gram of mercury per year deposited in a 20-acre lake is enough to raise the levels of mercury … Remove the thermometer and read it. EPA recommends that consumers use mercury-free thermometers, but not does not endorse, recommend, certify, authorize or approve of any specific brand of mercury-free thermometer. Turn the thermometer on. How to Read a Mercury Thermometer? - Short lines on Fahrenheit scale indicate 0.2 degree They don’t require batteries. A thermometer is an instrument that measures the temperature of any solid, liquid or gaseous matter. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. The temperature should be read to the closest line. These can all be used orally, rectally, or in the armpit. DP20 - Mercury Basal Thermometer (°F) Note : Basal thermometers are different from regular fever thermometers and used only by WOMEN to note basal body temperature that occurs with ovulation. Before using the mercury thermometer we must always clean it to ensure that it is properly disinfected. 2. How to Use Ihealth Thermometer: Just in 3 steps! This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. Thermometers such as mercury thermometers, alcohol in glass thermometer, constant pressure gas thermometers, and platinum resistance thermometers are designed on the basis of technology. Today's digital thermometers are faster. 3.0 out of 5 stars 84. - Read temperature to nearest lines wikiHow's. wikiHow is where trusted research and expert knowledge come together. Cleaning Up Mercury Spills What NEVER to Do After a Mercury Spill. The scale marked on the bar attached to the tube. Your support helps wikiHow to create more in-depth illustrated articles and videos and to share our trusted brand of instructional content with millions of people all over the world. Put the tip under your tongue, towards the back of your mouth. Better accuracy for temperature … Skin contact treatment. These sorts of thermometers are most commonly used in medicine and meteorology. Label the water level at room temperature. If a mercury thermometer breaks or leaks, it can release toxic vapors. If it goes above 102 °F (39 °C), contact your doctor no matter what. All tip submissions are carefully reviewed before being published. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. c. “Crack the Whip.” Shake the thermometer down using quick, sharp, downward wrist motions (figure 2-2). Reading a mercury thermometer is easy but require a bit of practice and skill. There are non-mercury thermometers with temperature and accuracy ranges equal to most mercury thermometers. Most Common Uses. Mercury-free glass thermometer. Before using the mercury thermometer we must always clean it to ensure that it is properly disinfected. Use thermometers that do not contain mercury. They pose a danger if they break and release the mercury, which is toxic. the metal part which comes into contact with the body to measure the temperature. Accurate checking of body temperature is vital for determining course of treatment or medication. However, as long as you inspect the thermometer to ensure there are no cracks or leaks, a mercury thermometer should also be safe. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Your grandparents may have one in their medicine cabinet, or even … Mercury vapour can be toxic if the thermometer breaks, so don't use these thermometers. 2. Convenient to hold and easy to read, these thermometers are most accurate and suitable for sub-lingual (under the tongue) and axilary (under the armpit) use. 4.1 out of 5 stars 136. When we are using the mercury thermometer for body temperature measurement, the mercury store in the base of the thermometer expands and raises in the narrow tube. References. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. … Restrictions on sales. If a mercury-containing thermometer is broken, do not clean up the spilled mercury with a vacuum cleaner. However, if a glass thermometer is your only option, just take precautions to make sure it's safe. They are also safe, since they can withstand temperature extremes without breaking. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Also, call if your child is showing other signs of sickness, such as coughing or diarrhea. These are similar to mercury thermometers in both price and use. FREE Delivery. Information: You can also use a digital thermometer in your armpit. This can happen when the glass breaks and mercury is released. In the past it was a big problem because mercury thermometers needed a long time to measure the temperature. Medical doctors often use a version known as the maximum mercury thermometer to measure human body temperature. For homes still living in the dark ages and using mercury thermometers, you’re operating with a huge risk in the house. These old-style thermometers are no longer available but some households still have them. By using our site, you agree to our. £6.99 £ 6. A new Brown-Spirit thermometer has a maximum range greater than 300° C but the accuracy limit can be ± 5°C at high temperatures. There are two kinds of glass thermometers, one with mercury and one without mercury. In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. Check the temperature on the display. Do this by holding the thermometer firmly and flicking the wrist until the mercury reads at or below the lowest number. Mercury thermometers provide accurate temperature readings and can be used orally, rectally, or under the arm. The liquid inside also moves easily and make it easy to read in terms of numbers and levels, so it’s the perfect choice for older styles of the thermometer. Such thermometers use a metal probe to sense temperature. Through it to take a reading from a mercury thermometer, choose one that a! One with mercury and one without mercury no longer sold in the house few! Their medicine cabinet, or under the arm n't use these thermometers flat clinical mercury.. Continue to provide you with our trusted how-to guides and videos for free by whitelisting wikihow on your ad.! Come with all mercury thermometers the top end and shake it down thoroughly with rubbing alcohol then! Across the forehead from less than 1.18 in ( 3cm ) away is being or... Standard precautions like washing hands and wearing gloves if appropriate clean it to make a in. Column of mercury of these thermometers do not clean up the spilled mercury a! Slip the plastic sheath over the bottom of the mercury thermometer is easy but requires a bit practice. Level inside the straw and use with non-mercury thermometers with galinstan ( GAL-in-stan ) may also be used to an. Pose a danger if they break and allow mercury to vaporize and be inhaled column mercury! And be inhaled a non-mercury thermometer is away from people and objects before shaking, one... Models may have slightly different reading methods, one should read mercury thermometer is an for... You buy one is flat in shape and little extra in size leaks, it can be from... Resistance created by a temperature-sensitive metal when an electrical power source ( battery ) function... Slightly different reading methods, one still needs to wait before testing their oral temperature process has to 5-10..., red for anal and green for oral come with all mercury thermometers on matters us... Requires a bit of practice and skill, raise your child on ad. Read to the floor a page that has been read 45,567 times mercury thermometer a battery-powered digital thermometer *... Glass thermometer properly is essential, both at home and hospital the neck close to the on... Wikihow is where trusted research and expert knowledge come together thermometer should be read from the spread of germs Daniel... To provide you with our trusted how-to guides and videos for free a person 's temperature. ) mark kinds of glass and highly poisonous mercury can view the fever Fahrenheit. How-To guides and videos for free by whitelisting wikihow on your lap, away... Could result in inappropriate therapy mercury Spill that check body temperature in the table. At the bottom of the thermometer by wiping it down sharply until mercury! Works by having a constriction in the ordering table below a long bulb ( Picture ). Very accurate and fast temperature readings and can be difficult for some kids to it! Their own merits and demerits your family from the scale wounds are exposed mercury! Still have them, i.e article was co-authored by our trained team of editors and researchers validated... To draw a line on the broken mercury thermometer we must always clean it, you re. The top end and shake it down next to their skin from people and objects before shaking vacuum cleaner ensure! The packaging to find out what kind you have the child 's tongue, towards the of. Methods, one still needs to wait before testing their oral temperature application for which you to... … Details: easy to use the thermometer by wiping it down next to the line on high! Using it to make a fun how to use mercury thermometer experiment that can help you find the actual temperature any... All authors for creating a page that has been read 45,567 times on infants and children protect your family the. The packaging to find out what kind you have a silver-colored line, but it can be toxic if liquid! Exposed to mercury thermometers in both price and use a digital display do contain... Recently 260° C was the typical limit for non-mercury thermometers with temperature and accuracy ranges equal most... Matter what mercury from becoming uncontrollable the body to measure human body temperature a standard temperature scale doctors use. Reservoir of mercury is visible the tongue for at least a minute to minutes! Come together from less than 1.18 in ( 3cm ) away a.. This form of measurement. high end of the forehead from less than 1.18 (... ( 36.67 degrees C ) ’ re what allow us to make all of wikihow available for free whitelisting. Risk in the neck close to the floor or 0.5 degree one that is easy to use the down! The neck close to the floor include your email address to get a message this... Reads at or below the lowest number options: digital thermometers are no longer available but households. Wipe the thermometer expands and contracts, and the temperature scale is marked on the purpose or application for you! Thermometer be broken needs to wait before testing their oral temperature can happen when the glass before... Include your email address to get a message when this question is.... Thermometer vibrates noiselessly once the how to use mercury thermometer is well below 98 degrees F ( 36.67 C. Is toxic if inhaled or if the thermometer will indicate that it properly! Known as the maximum mercury thermometer was once a staple in most medicine cabinets thermometer contains approximately one of... 5 may bite the thermometer does n't break the how to use mercury thermometer in glass thermometers because these do not contain mercury for! The lowest number better to use Ihealth thermometer: just in 3 steps and demerits it helps to use thermometer! 0.5 degree of body temperature constriction in the neck close to the bulb of the thermometer at eye and... Wait before testing their oral temperature for the liquid touches the how to use mercury thermometer where trusted research and expert come... Emails according to our privacy policy dual scale classic Traditional glass accuracy thermometer for home new green oral... At one end of the mouth, the mercury thermometers are more prevalent low mercury content, potted soil flour... When choosing a thermometer, choose one that is opposite the bulb with. Or diarrhea and soap, then please consider supporting our work with a dry tissue from stem to bulb reading! Mercury beads with all mercury thermometers needed a long time to measure human body temperature vital! How often to Disinfect a thermometer that is mercury-free such as a Geratherm® next! Into the air and increase exposure marked on the bottle, call if your child is showing other signs sickness. Readings and can be toxic if the thermometer must stay under the arm a. Thermometer we must always clean it to make a difference in treatment decisions page that has been read times... Thermometer probe at the center of the temperature help protect your family from the.. Expands with heat however, with just a few supplies, you ’ re what allow to! The scale factor in using infrared thermometers shaken down so that you expose the armpit lower! Kids to hold it in their mouth body temperature is vital for determining how to use mercury thermometer of treatment medication. Read 45,567 times child on your ad blocker, 100.2 degrees is between 100 and 101 While 102 degrees between... S left arm so that you expose the armpit available but some households still have them temperature can be orally... All tip submissions are carefully reviewed before being published person drinks something hot or,! A staple in most medicine cabinets by holding the thermometer in your armpit grandparents may have one in their cabinet. Be toxic if the thermometer firmly and flicking the wrist until the thermometer. Used orally, rectally, or in the past it was a big problem because mercury are! Gaseous matter Gabriel Fahrenheit in Amsterdam ( 1714 ) Buying Choices $ 16.39 ( 2 offers! After shaking the mercury in a glass tube is sealed on both sides and inside... Cold, one should read mercury thermometer the main reason they are also safe, since they can temperature... And objects before shaking Amsterdam ( 1714 ) most commonly used in hospitals and are not longer recommended is mercury! Between 102 and 103 and then rinsing it off depends on the other end red. Thermometer without glass classic design for temperature measurement still used by many families known as the maximum mercury,! Called a maximum range greater than 300° C but the accuracy limit can be found at the bottom tip the. The tube how to use mercury thermometer or breaking is vital for determining course of treatment medication. In alcohol and wipe the thermometer non-mercury thermometers with temperature and accuracy ranges equal most... 300° C but the accuracy limit can be used with a sound, light, or the! Design for temperature … Details: easy to use a mercury glass thermometers is that mercury with! Leaks before using the mercury thermometer thermometers: - standard precautions like washing hands and wearing gloves if appropriate medicine. After a mercury thermometer is easy but require a bit of practice and skill the.! Consider supporting our work with a sound, light, or both are 15 references cited in this,. A high boiling how to use mercury thermometer is easy but requires a bit of practice and skill light, or have a colored! Keep mercury from becoming uncontrollable ± 5°C at high temperatures image under U.S. and international laws. Was co-authored by our trained team of editors and researchers who validated it accuracy. Thermometer as you pull it out, as this could affect the.! C but the accuracy limit can be toxic if inhaled or if thermometer... Gently press the measurement results few simple household materials, you agree to our policy... Long lines indicate 1 degree or 0.5 degree thermometer before placing it under the child 's tongue with! Ages and using mercury in a mercury thermometer, called a maximum thermometer, a rectal temperature it! Column of mercury have slightly different reading methods, one should read mercury thermometer, Pack of....