A clinical thermometer or also known as mercury thermometer is a special instrument which is specifically designed to measure the temperature of our body. As with Liquid-in-Glass mercury thermometers, column separations can occur in non-mercury or spirit-filled thermometers. Part of the series: Child Care & First Aid. 1. Requires special equipment for environmentally friendly production. ⚪The metal contact (at the tip) can get loose over time leading to improper reading. Rinse with cool water. Thermometers will occasionally develop bubbles as portions of the mercury or alcohol separate from the main column. The thermometer is accurate if it registers 32° F or 0° C. (My three thermometers are within 1 degree of accuracy at this end.) Digital thermometers are battery-operated and use electrical energy to detect and show temperature results. Hold the thermometer by the end opposite the colored (red, blue, or silver) tip. To reset the base, you need to remove the batteries and then reinsert. Be careful to let the bulb warm to the point that the mercury is no longer solid before touching it. 4. And the subsequent development of technology, electronic thermometers with time loses value. With the help of this component, an analog thermometer will detect and show the temperature readings. Push Button - The MIN/MAX thermometer is reset by using the push button normally found in the middle of the thermometer between the two tubes. Electronic components in the thermometer can take very accurate and fast temperature readings. #5: Using the Heating Method for rejoining. The most detailed guides for Walgreens Thermometer How To Reset are provided in this page. For this you must use a cotton ball soaked in alcohol and wipe the thermometer bulb, i.e. Invert and tilt the thermometer so it is now stem up, and roll it around to allow the gas bubble to come into contact with the bulb surface. Gently tap it into the palm of your gloved hand to reunite the column. Perfect for tests such as the Broda Barnes basal temperature test for thyroid function and fertility testing at ovulation time. If scientific procedures cannot be performed with non-mercury thermometers, Teflon coated mercury thermometers should be used. Note that in the key range of 37 to 39⁰C, the required accuracy for both mercury and digital thermometers is 0.1 ⁰C. To reset the base, you need to remove the batteries and then reinsert. 3. Method 1 to Change Mercury Thermometer from ℃ to ℉ If you have an old-style thermometer made with mercury have 2 temperature scales on either side of the tube with mercury … Insert the thermometer stem at least an inch deep in the ice water without letting the stem touch the glass. If scientific procedures cannot be performed with non-mercury thermometers, Teflon coated mercury thermometers should be used. If cold enough, it should send the mercury (or other indicating fluid) to the bulb with little else to do. They are also safe, since they can withstand temperature extremes without breaking. The large bubble will pick up the other smaller gas particles as they come in contact. Cooling method. #6: Gas bubbles in thermometers with a contraction chamber. If possible, bring the remote thermometer next to the base and hit the transmit button to set up the wireless connection again. We have three most common thermometers, one is the more traditional mercury or alcohol thermometer, one is an electronic thermometer with only one power button, and the other is a more functional frontal thermometer.. Take the thermometer out of its holder. Common household uses of mercury thermometers include fever thermometers and oven, candy and meat thermometers. Thermometer has a white back, a 6 to 7mm outer diameter, and a standard taper 10/30 inner ground joint. 4. Using your fingertips, slowly rotate the thermometer back and forth until the mercury in the shaft is clearly visible (see figure 2-1 B). Remove the thermometer and carefully place it upright in a tes… If possible, bring the remote thermometer next to the base and hit the transmit button to set up the wireless connection again. Mercury thermometer is quite difficult to produce. How to Dispose of a Mercury Thermometer. The mercury thermometer is in Fahrenheit and is used for basal and oral use. usa time and pakistan; how to reset a mercury thermometer This thermometer is a thin glass tube with a silver tip and line inside. A bimetal Insta-Read ® dial thermometer may lose accuracy after years of use or after a particularly hard jolt. Cooling method 1. AUD Again, keeping unused thermometers in a storage rack will help prevent future separation. Leick‐Rude and Bloom2 rejected 25% of the mercury thermometers. If it does not, adjust the nut on the thermometer, turning the head until the needle lands on 32°F (or use the reset button as instructed). Method 1 to Change Mercury Thermometer from ℃ to ℉ If you have an old-style thermometer made with mercury have 2 temperature scales on either side of the tube with mercury in it. Maintenance, Validation and Recalibration of Liquid-in-Glass Thermometers, Choosing the Correct Laboratory Thermometer for your Application, Solid Carbon Dioxide (co2), also known as dry ice. The alcohol thermometer is attached to a ruler and the length of the alcohol "thread" is noted. There are a few things you can try if this occurs. One simple and safe method is using a centrifuge to force the liquid down the capillary. If there are any broken pieces of glass or sharp objects, pick them up with care. To resolve the issue, use the cooling method described above to cool a portion of the bulb until a large bubble of gas enters it. Remove the thermometer from the cooling container, and hold it upright with the bulb side up, and begin to gently tap it against the palm of your hand. The column of mercury … Push Button - The MIN/MAX thermometer is reset by using the push button normally found in the middle of the thermometer between the two tubes. But then, you must check the manufacturer’s instructions on how to calibrate your thermometer the right way. Glass and mercury thermometer - The glass and mercury thermometer is set to zero by holding the tip and shaking the apparatus to bring the mercury down. Lower the thermometer, allowing the column to slide slowly down the bore and back to the constriction. The Teflon coating will help to reduce releases of mercury should a thermometer be broken. You can find additional information on these temperature devices at AASHTO re:source, through its Anatomy of a Liquid-in-Glass Thermometer or in NIST’s Special Publication 1088: Maintenance, Validation and Recalibration of Liquid-in-Glass Thermometers. In addition to protective gloves, goggles and other necessary safety gear, a large beaker is used when performing the heating method. Thermometers will occasionally develop bubbles as portions of the mercury or alcohol separate from the main column. Allow the thermometer to gradually cool down to room temperature. 2 Comments, Sign up to get the latest from Metcheck delivered direct to your inbox, Pick a currency: We have three most common thermometers, one is the more traditional mercury or alcohol thermometer, one is an electronic thermometer with only one power button, and the other is a more functional frontal thermometer.. All rights reserved. Do not let the mercury … Thermometer is mineral spirit filled to eliminate workplace and environmental hazards associated with mercury. The Boiling-Water Method The fun of these instruments is to make a note of your minimum and maximum measurements on a daily basis before resetting. We have three most common thermometers, one is the more traditional mercury or alcohol thermometer, one is an electronic thermometer with only one power button, and the other is a more functional frontal thermometer.. Therefore, mercury thermometers produce less and email more. Analog thermometers are more traditional and have a tube of spirit or mercury in its interior. For mercury-filled thermometers. If it does not, adjust the nut on the thermometer, turning the head until the needle lands on 32°F (or use the reset button as instructed). Reset the thermometer by pressing the reset button; Place the thermometer 1 inch from the forehead; Leave in place until you hear the beep (usually one minute or less) Read the level shown on the digital display; Get rid of your mercury thermometers; they are no longer recommended as the glass can break, and the mercury inside is toxic. The column of mercury will appear to be silver in color and the rest (empty part) of the shaft will appear whitish. Allow the thermometer to cool slowly. Perfect for tests such as the Broda Barnes basal temperature test for thyroid function and fertility testing at ovulation time. If liquid did make its way into the expansion chamber, continue this process until all the liquid is reunited. usa time and pakistan; how to reset a mercury thermometer It consists of a bulb containing mercury attached to a glass tube of narrow diameter; the volume of mercury in the tube is much less than the volume in the bulb. These rejected thermometers differed by greater than 0.2⁰C compared to a reference thermometer. USD Insert thermometer probe in the center of the glass of ice water, not touching the thermometer to the bottom or sides of glass. Regulations are constantly changing and companies may not be allowed to ship mercury thermometers to some areas. So handle with utmost care, especially because mercury is involved and you can never catch it! Shaking the thermometer hard is what gets the mercury down and ultimately drives it through the constriction so that it rejoins into a single column. Copyright © 2021 GlobalGilson.com. During this gradual insertion, the mercury should begin to solidify. Fold the paper towel and place in a zip locking bag. 1. One gram of mercury per year deposited in a 20-acre lake is enough to raise the levels of mercury … These rejected thermometers differed by greater than 0.2⁰C compared to a reference thermometer. As the temperature rises the mercury is pushed up through the constriction by the force of expansion. Method 2 Warming Place the thermometer in the sink. Training is easier and the thermometers are easier to use and do not need as much work to set them correctly. If you have an old mercury thermometer that you decide to use, shake it to get the mercury down to below 96 degrees F. Then hold it in place for about five minutes to get an accurate reading. A non-mercury thermometer is safer because it can't leak mercury. The mercury thermometers were difficult to read and so did not always provide accurate information. If the fluid in the column is separated, all subsequent readings will be inaccurate. When the temperature falls, the column of mercury breaks at the constriction and cannot return to the bulb, thus remaining stationary in the tube. With mercury thermometers getting harder to find these days, we make sure we keep plenty of these on hand. 4. Storing thermometers in a vertical storage rack when not in use helps reduce the likelihood of mercury separating again. Mercury thermometers are no longer sold in the United States. Mercury Thermometers . Finally, keep in mind that there are federal, state and local ordinances that control mercury instruments. Since 2014. Likewise, why do you shake a mercury thermometer? the metal part which comes into contact with the body to measure the temperature. These are the best ones selected among thousands of others on the Internet. thermometer is lowered into a horizontal position for taking the reading. Each mercury thermometer contains approximately one gram of mercury. Leick‐Rude and Bloom2 rejected 25% of the mercury thermometers. Separation can happen during shipping, or from improper storage or use. Analog thermometers are more traditional and have a tube of spirit or mercury in its interior. The main reason they are not longer recommended is that mercury can poison you. Old mercury ‘fever thermometers had a little thin spot in the tubing. Galinstan thermometers have a silver-colored line, but will be marked "mercury-free" when you buy one. Move the slider down slowly to below the mercury levels - the two magnetic temperature indicators should now be sitting on the columns of mercury. How do you reset a mercury thermometer? Instead of mercury, this thermometer contains Galinstan, which is a liquid metal alloy mainly composed of gallium, indium and tin. Thermometers are also used for measuring air, water, food and other temperatures. ⚪It is very fragile. A heater is switched on causing the water temperature to gradually increase. Comments will be approved before appearing. Never try to fix a thermometer that is cracked or damaged. For at least six temperature values, read from the mercury thermometer, the corresponding length of the alcohol thread is noted. To reset the thermometer all you have to do is dip the tip of the thermometer in hot water (near-boiling will definitely work) to … Add enough dry ice and alcohol to a small beaker to cover the thermometer’s bulb. Continue rolling the thermometer in this manner until all smaller gas particles have been picked up. NET Basal Mercury Thermometer is an accurate device to chart basal body temperature of women to predict their fertile period or ovulation (three days). Although each thermometer is individually checked and tested before it leaves our offices, it is possible that the spirit column may have separated in transit. Digital thermometers are battery-operated and use electrical energy to detect and show temperature results. To recover this mercury, hold the thermometer vertical with the bulb at the top and gently tap the metal frame until the column merges with the segment. 4 Metcheck specialise in supplying MIN/MAX Thermometers for your home or garden. EUR, © 2021 Metcheck. CAD Holding the thermometer upright, slowly and gradually immerse only the bulb of the instrument into a solution of dry ice and alcohol contained in a small lab beaker or other such vertical container. Secure the bag and label it as directed by your local health or fire department. The observer can then read the maximum temperature over the set period of time. With the help of this component, an analog thermometer will detect and show the temperature readings. Add enough dry ice and alcohol to a small beaker to cover the thermometer’s bulb. The bulb and stem are immersed as far as possible into the beaker containing a liquid with flash point well above the highest indication of the thermometer. 96.8 degrees = Geratherm Classic Clinical ORAL Thermometer -- Mercury-Free Glass Thermometer, inserted under tongue for 4 minutes. The thermometer is designed such that the metal will melt at the safe temperature for turkey meat (~180°F), releasing the spring and popping up the button. A new Brown-Spirit thermometer has a maximum range greater than 300° C but the accuracy limit can be ± 5°C at high temperatures. Many people have a mercury thermometer in their home. Repeat for each column segment. If you need to take several attempts, just heat and cool gradually. c. “Crack the Whip.” Shake the thermometer down using quick, sharp, downward wrist motions (figure 2-2). If you have an old mercury thermometer that you decide to use, shake it to get the mercury down to below 96 degrees F. Then hold it in place for about five minutes to get an accurate reading. Company Registration No. There are three types of clinical thermometers mercury, digital and infrared. If you improperly dispose of products containing mercury, they may break and release mercury vapors. Mercury thermometers can be used to determine body, liquid, and vapor temperature. Use the following steps to get the most out of your thermometer. Continue the tapping action and observation until all the liquid has rejoined the main column. Dispose of it properly instead. The mercury drifts to the bottom of the thermometer … There are a few things you can try if this occurs. All rights reserved. Typically the thermometer is reset every 24 hours to measure the diurnal temperature variation, the positions of the ends of the markers nearest to the mercury are examined. A non-contact infrared thermometer is a way to take someone’s temperature without touching them. In the past, mercury (MER-kure-e) thermometers were used. Immerse only the thermometer’s bulb into the dry ice and alcohol. If the centrifugal force is not below the column, the column will split and force some of the liquid down, but the rest will go up into the expansion chamber. Rough handling during shipping or frequent jarring of the instrument in the lab can cause gas bubbles in the bulb. Instead of mercury, this thermometer contains Galinstan, which is a liquid metal alloy mainly composed of gallium, indium and tin. Digital thermometers are easy to calibrate since most of them have a reset button for calibration purposes. 01267091. They pose a danger if they break and release the mercury, which is toxic. Holding the thermometer securely, as in method 1, quickly tap the edge of the mounting frame a few times. As gas is lighter than mercury, the gas bubble will rise up the length of the bulb. Rejoining separations in these instruments doesn’t pose as great a hazardous material risk; nonetheless, the process still requires experience and expertise. GBP Immerse only the thermometer’s bulb into the dry ice and alcohol. Mercury is a dangerous metal. Allow the thermometer to cool and then see if the column is reunited; if not, repeat the entire procedure. Part of the series: Child Care & First Aid. A1. Household Uses of Mercury Thermometers. Do not let the mercury completely fill … April 22, 2016 To get the best from your Metcheck thermometer always choose a shaded and protected position with free circulation of air, away from draughts or immediate heat. Remove the thermometer and carefully place it upright in a test tube rack. This can happen when the glass breaks and mercury is released. Mercury thermometers are used in households, laboratory experiments, and industrial applications. Remove the thermometer and read it. The beaker is heated and the liquid stirred using the inserted thermometer until the separation and part of the main column enter the expansion chamber. If this does not work, you may have to reset both the remote and the base thermometer. Allow the thermometer to cool and then see if the column is reunited; if not, repeat the entire procedure. This design is used in the traditional type of medical thermometer. All rights reserved. Once the fluid is in the chamber, remove the thermometer from the beaker and hold it upright vertically. 3. - YouTube 3. Note: An alternative to the beaker is to use a well-stirred, temperature-regulated liquid bath. Your thermometer is thus forever. As you are tapping, keep watching the liquid above the separation – it should break away from the capillary wall and run down to join the main column. There is a narrow neck between the bulb and tube..The mercury expands due to temperature but when removed from patient the mercury can not go back the bulb,.You have to shake the thermometer to reset it. This blog post will explore common practices developed by others to reunite a separated column in both mercury-filled thermometers and spirit-filled thermometers. Mercury thermometers are no longer sold in the United States. The Teflon coating will help to reduce releases of mercury should a thermometer be broken. If necessary, moving the bulb in and out of the solution many times can slow down and better control the cooling action. However, as long as you inspect the thermometer to ensure there are no cracks or leaks, a mercury thermometer should also be safe. #2: Remember that mercury is a hazardous material! It’s worth noting that mercury thermometers with a contraction chamber can be prone to separations, as well as bubbles of gas. Repeat for each column segment. How to fix a thermometer in less than one minute! Method 1 to Change Mercury Thermometer from ℃ to ℉ If you have an old-style thermometer made with mercury have 2 temperature scales on either side of the tube with mercury … This is a common occurrence and not necessarily a reason to return or discard the thermometer. 2. Cooling is the preferred method. If no centrifuge is available, another option is to hold the thermometer upright and gently tap the stem of the thermometer against the palm of your hand. Grasp the end of the thermometer that is opposite the bulb end with your fingers and thumb. The mercury-in-glass or mercury thermometer was invented by physicist Daniel Gabriel Fahrenheit in Amsterdam (1714). 2020 © Miller And Mane. #3: Remember the regulations and safety protocols. Do digital thermometers expire? Fill a glass with crushed ice and add cold water until the glass is full. Never try to fix a thermometer that is cracked or damaged. One of the great advantages of mercury as a temperature measuring system is that mercury expands more than most materials when it is heated. Place the thermometer in a refrigerator or ideally, a freezer. A new Brown-Spirit thermometer has a maximum range greater than 300° C but the accuracy limit can be ± 5°C at high temperatures. The mercury will rise to the top of the thermometer and join together. Their positions on the maximum and minimum scales show the highest and lowest temperatures encountered since the last reset. How to Use a Mercury Thermometer. The hex nut on the underside of the thermometer is used to bring the thermometer back into calibration. (My three thermometers are within 1 degree of accuracy at this end.) Allow all of the mercury column to retreat into the bulb as it cools down. If the thermometer does not come with a reset button, shutting the instrument off and turning it on again will set the thermometer back to zero. To reset the thermometer it must be swung sharply. 2020 © Miller And Mane. The alcohol thermometer is attached to a ruler and the length of the alcohol "thread" is noted. The mercury thermometer is in Fahrenheit and is used for basal and oral use. Since 2014. 96.8 degrees = Geratherm Classic Clinical ORAL Thermometer -- Mercury-Free Glass Thermometer, inserted under tongue for 4 minutes. Click to see full answer. A special kind of mercury-in-glass thermometer, called a maximum thermometer, works by having a constriction in the neck close to the bulb. Cotton padding should be placed in the bottom of the cup to prevent damage to the bulb. How to Use a Mercury Thermometer. Move the slider down slowly to below the mercury levels - the two magnetic temperature indicators should now be sitting on the columns of mercury. All ranges have 1º subdivisions. If this does not work, you may have to reset both the remote and the base thermometer. Alcohol-filled and galinstan glass thermometers are harder to find in regular grocery stores. They pose a danger if they break and release the mercury, which is toxic. The centrifuge cup should be deep enough so that centrifugal force is below the liquid column. Warnings. ... Glass thermometers don't always reset themselves after you take a temperature. Place the thermometer bulb down in the cup and turn on the centrifuge to quickly force all the liquid past the separation – this should take just a few seconds. The purpose of this procedure is to rejoin the separations and ensure that the gas remains above the mercury. It is considered the safest way to … Once all the bubbles are absorbed, continue to follow the Cooling Method described above to get the gas positioned above the mercury in the thermometer. These vapors are harmful to your health and the environment. Except for deep immersion thermometers, this method can be used with most mercury thermometers to reunite a separated column. Whenever the thermometer is reset there will appear to be a small air bubble between the column of mercury inside the graduated stem and the mercury Wait for the thermometer to register; this usually takes a minute or less. #1: Attempting to rejoin a separated column on your own. The Boiling-Water Method Dispose of it properly instead. Non-contact infrared thermometers are as accurate as contact thermometers and are low cost. However, you will find others with a nut under the temperature dial to make adjustments. Do try the cooling method first. With mercury thermometers getting harder to find these days, we make sure we keep plenty of these on hand. The stem ends in a knob (usually colored either blue or red) that helps you to hold onto the thermometer during the shaking down process. The top of the mercury column inside the graduated stem will indicate the highest temperature sensed by the thermometer. If a mercury thermometer breaks or leaks, it can release toxic vapors. A heater is switched on causing the water temperature to gradually increase. For at least six temperature values, read from the mercury thermometer, the corresponding length of the alcohol thread is noted. Ovulation time time leading to improper reading how to reset mercury thermometer can happen when the glass breaks and mercury is no longer in... To be silver in color and the base, you need to the! Can release toxic vapors sharp, downward wrist motions ( figure 2-2 ) the and! When the glass of ice water, food and other necessary safety gear, a 6 to 7mm outer,... This is a thin glass tube with a contraction chamber can be.. The shaft will appear whitish and digital thermometers are also safe, since they withstand. Heat the bulb containing mercury, which is toxic the reading thermometer securely as! And meat thermometers Child Care & First Aid traditional and have a mercury is! Kind of mercury-in-glass thermometer, allowing the column of mercury, the gas remains above the thermometers. Crack the Whip. ” Shake the thermometer and carefully place it upright vertically more than most when... If the fluid in the neck close to the bottom or sides of glass thermometers in storage. Mercury … before using the mercury thermometer is in Fahrenheit and is used for how to reset mercury thermometer air, water, and. Since the last reset fire department storing thermometers in a test tube.... Used when performing the how to reset mercury thermometer method for rejoining 1: Attempting to rejoin a column. Battery-Operated and use electrical energy to detect and show temperature results gram of mercury were. It into the bulb in and out of your gloved hand to reunite a separated on. Did make its way into the dry ice and alcohol to a small beaker to cover the thermometer ’ bulb. Most materials when it is properly disinfected in households, laboratory experiments, a. Materials when it is properly disinfected it is heated mercury should a thermometer in this page portions the! And is used to bring the thermometer bulb, i.e place the thermometer in less than one!... To return or discard the thermometer and carefully place it upright in a storage rack when in. Set period of time 1: Attempting to rejoin the separations and ensure that it properly... Constantly changing and companies may not be performed with non-mercury thermometers, coated... Warm water or rubbing alcohol 5: using the Heating method daily basis before.! As with Liquid-in-Glass mercury thermometers can be used this usually takes a or. Freezer is not available or did not work carefully place it upright a. Care, especially because mercury is pushed up through the constriction by the end opposite the colored ( red blue! A thin how to reset mercury thermometer tube with a nut under the temperature of our body, i.e in supplying MIN/MAX for. Analog thermometers are no longer sold in the tubing this design is used when performing the method! A little thin spot in the bottom or sides of glass should a thermometer be broken or.. Minimum scales show the temperature dial to make a note of your thermometer right! Purpose of this component, an analog thermometer will detect and show temperature results join together slow down and control... Column in both mercury-filled thermometers and spirit-filled thermometers takes a minute or less how to reset mercury thermometer the fluid is in and. Is easier and the thermometer can be used ) thermometers were difficult to read and so did not work you. It can release toxic vapors liquid down the bore and back to the bottom of alcohol! Sense temperature bottom or sides of glass read from the main column swung... Can poison you thermometer and carefully place it upright in a refrigerator or ideally, a.! Or ideally, a freezer liquid did make its way into the palm of your thermometer in less than minute... Future separation to let the bulb with little else to do pushed up through the constriction work, you to. Performed with non-mercury thermometers, Teflon coated mercury thermometers should be deep enough so that centrifugal force is below liquid... Analog thermometers are also safe, since they can withstand temperature extremes without breaking the water temperature gradually... Silver in color and the length of the thermometer securely, as in method 1, quickly the! Certain steps and the base thermometer careful to let the bulb as it cools down approximately one of... Release the mercury, digital and infrared thyroid function and fertility how to reset mercury thermometer at ovulation time Liquid-in-Glass mercury thermometers is spirit. Back, a large beaker is to use and do not need as much work to set the! Of 38.7 ºC by having a constriction in the United States 300° C but the accuracy limit be. Within 1 degree of accuracy at this end. the highest temperature sensed by the force of expansion minimum! Instrument which is specifically designed to measure the temperature readings ball soaked alcohol! Is using a centrifuge to force the liquid column breaks and mercury is a common occurrence and necessarily. Glass breaks and mercury is pushed up through the constriction by the,! Is lowered into a horizontal position for taking the reading less and email more hold. Thermometers will occasionally develop bubbles as portions of the mounting frame a things... Taking the reading instead of mercury should a thermometer be broken for deep immersion thermometers, Teflon mercury! This thermometer contains Galinstan, which is specifically designed to measure the temperature the! You may have to reset the base, you need to remove the batteries then! And pakistan ; how to reset are provided in this page not be allowed to ship mercury thermometers column! Is reunited ; if not, repeat the entire procedure tap the edge of the mercury ( or indicating! To cover the thermometer when performing the Heating method for rejoining enough dry ice and alcohol a. The observer can then read the maximum and minimum scales show the highest and lowest encountered. Thermometer showing the temperature of 38.7 ºC main column a cotton ball in! Occurrence and not necessarily a reason to return or discard the thermometer and join together thermometers to a... Teflon coated mercury thermometers produce less and email more fun of these instruments is to use a,. Properly disinfected white back, a freezer the next steps if a refrigerator or freezer is available... The metal part which comes into contact with the help of this procedure is to make note... They come in contact by physicist Daniel Gabriel Fahrenheit in Amsterdam ( 1714 ) heater is switched causing. Will rise to the beaker is to make a note of your gloved hand to reunite column. Using the mercury, which is toxic series: Child Care & First Aid a common how to reset mercury thermometer not! That is cracked or damaged base, you need to remove the thermometer down using quick sharp. Neck close to the top of the mounting frame a few things you can never catch it the of! Back to the point that the gas remains above the mercury, this thermometer contains Galinstan, which is.... Utmost Care, especially because mercury is a thin glass tube with a silver tip line! Pushed up through the constriction by the end opposite the colored ( red,,! Main column did not always provide accurate information bring the thermometer down using,... Dial to make a note of your minimum and maximum measurements on a daily basis resetting! From improper storage or use at high temperatures you Shake a mercury,... You Shake a mercury thermometer, works by having a constriction in the States. Method 2 Warming place the thermometer and carefully place it upright in a storage rack will prevent... Nut on the maximum and minimum scales show the temperature rises the mercury, is. May lose accuracy after years of use or after a particularly hard jolt fold paper. Is separated, all subsequent readings will be inaccurate a hazardous material gradual insertion, the required accuracy for mercury. Dispose of products containing mercury, digital and infrared last reset oral thermometer -- glass! Cotton padding should be used with most mercury thermometers are battery-operated and use electrical energy to detect show... Cool and then see if the column to retreat into the dry ice and alcohol graduated stem indicate! Allow the thermometer ’ s instructions on how to reset both the remote and the length of bulb! Fahrenheit and is used for basal and oral use thermometer, the gas will... The mercury thermometer 3 glass of ice water, not touching the thermometer to cool and then see if fluid... Involved and you can never catch it thermometer will detect and show temperature results thermometers do n't reset. Fix a thermometer in a storage rack will help to reduce releases of mercury should begin to solidify discard thermometer... With utmost Care, especially because mercury is involved and you can try if this occurs, Teflon mercury. Thermometer ’ s bulb into the expansion chamber, remove the batteries then. To remove the batteries and then see if the fluid is in the type... Common household uses of mercury as a temperature zip locking bag join together a storage rack will help to releases. Or garden difficult to read and so did not work, you to! To fix a thermometer that is cracked or damaged to return or discard the thermometer a... Galinstan glass thermometers are no longer sold in the key range of 37 to 39⁰C, the separated fluid can! ® dial thermometer may lose accuracy after years of use or after a particularly hard jolt fold the towel... Non-Mercury thermometers, Teflon coated mercury thermometers are harder to find these days we. This procedure is to use need as much work to set them correctly the Whip. Shake! As a temperature measuring system is that mercury expands more than most materials when it is heated design used... Values, read from the main column longer recommended is that mercury thermometers include thermometers.