With changes in temperature, the mercury expands and contracts, and therefore the temperature is often scanned from the size.
Mercury thermometer is often wont to confirm body, liquid, and vapor temperature. Mercury thermometer is utilized in households, laboratory experiments, and industrial applications.
What is Mercury Thermometer
A Mercury thermometer is a type of thermometer that uses mercury as the working fluid to measure temperature. It consists of a glass tube with a bulb at one end, which is filled with mercury and sealed. The tube is marked with a scale that indicates temperature, typically in Celsius or Fahrenheit.
When the thermometer is placed in contact with a warm object or in a warm environment, the mercury in the bulb expands and rises up the tube, indicating the temperature. Conversely, when the thermometer is exposed to a cooler environment, the mercury contracts and moves down the tube, indicating a lower temperature.
Mercury thermometers have been widely used in various fields, including medical, scientific, and industrial applications, due to their accuracy and reliability. However, they are no longer commonly used due to the toxic nature of mercury, which can cause serious health and environmental hazards. As a result, alternative digital thermometers that use non-toxic materials, such as alcohol or electronic sensors, have become more popular.
Household Uses of Best Mercury Thermometer
Mercury thermometer common ménage uses of mercury thermometers embody fever thermometers and kitchen appliances, candy, and meat thermometers.
Though this unit did not make it to our best blood pressure monitor it still has some quality. Let’s have a look!
Mercury fever thermometers are the product of glass the dimensions of straw, with a silvery-white liquid inside. They are common in many households, schools, and medical facilities.
There live 2 general varieties of thermometers that measure body temperature:
Oral/Rectal/baby thermometers, containing about 0.61 grams of mercury. Basal temperature thermometers, containing about 2.25 grams of mercury.
Is There Mercury in My Thermometer?
If the liquid in the thermometer bulb is any color other than silver, it is not a thermometer.
Educational and Medical Uses of Mercury Thermometer
Mercury thermometers are also utilized in several applications, including chemical experiments, water and acid baths, blood banks, ovens, and incubators.
Mercury thermometers are used in:
1. Power plants and piping
2. Chemical tanks and vats
Phasing out in Industrial
EPA has launched an attempt to cut back the utilization of mercury-filled non-fever thermometers utilized in industrial settings wherever appropriate alternatives exist.
As part of a partnership EPA developed with the National Institute of Standards and Technology (NIST), NIST no longer provides calibration services for best mercury thermometer.
EXIT These changes provide flexibility to use alternatives to mercury-containing thermometers. View a list of the updated ASTM standards.
For additional info regarding phasing out industrial mercury thermometers, visit EPA’s Phasing out of Thermometers Used in Industrial and Laboratory Settings page.
Restrictions on Sales
Some states and municipalities have passed laws or ordinances barring the manufacture, sale, and/or distribution of mercury fever thermometers.
This is to assist take away the threat of measuring device breakage and therefore the sequent unharnessed of mercury vapor inside.
Alternatives to Fever Thermometer
A variety of correct and reliable mercury-free fever thermometers are on the market at your native pharmacy.
The most similar alternatives to mercury fever thermometers are battery- and solar-powered digital thermometers. These are just like mercury thermometers in each worth and use.
You should choose a thermometer that is easy to use and read. If you are choosing a battery-powered digital thermometer, choose one that contains a replaceable battery. Some of these thermometers do not have replaceable batteries.
Cleanup and Disposal
If you break a thermometer while using it or if you improperly dispose of it, the thermometer will release mercury vapors that are harmful to human and ecological health.
1. What to do when a mercury fever thermometer breaks
2. How to recycle and dispose of mercury products
Mercury thermometers is extremely repeatable and accurate over many years. You could put a working mercury thermometer in a time capsule and bury it for 10,000 years and it would still be working accurately.
The volume of mercury changes slightly with temperature; the small change in volume drives the narrow mercury column a relatively long way up the tube.
Q. Do they still make mercury thermometer?
A. Those days have passed. Since 2001, 20 states have banned mercury “fever thermometers” for medical use, and regulations tighten per annum.
But as of today the federal has more or less killed the mercury-in-glass thermometer within the United States—NIST has announced it will not calibrate mercury thermometers.
Q. Are mercury thermometers accurate?
A. In clinical studies between 9 and 23% of repeated measurements using an electronic thermometer differ by 0.5 degrees C or more whilst the corresponding range for mercury thermometers is 0.6%.
Q. Is it safe to use a thermometer?
Answer: The small silvery ball during a mercury-in-glass thermometer is often dangerous if the glass breaks and therefore the mercury is not cleaned up properly.
The mercury will evaporate and can contaminate the surrounding air and become toxic to humans and wildlife.
Q. Which is better thermometer or digital?
Answer: Digital thermometers provide faster results. Digital thermometers provide fast results as against mercury thermometers whose readings are slower to understand because you have got to attend for the mercury to heat then slowly rise to display the temperature.
Q. How long do you leave thermometer in your mouth?
Answer: After shaking the mercury down, place the thermometer under the child’s tongue, with the bulb toward the back of the mouth. Leave the thermometer in place for 3 minutes.
A Final Note
In principle, thermometers made of a different material might be expected to give different intermediate readings due to different expansion properties.
In practice, the substances used are chosen to have reasonably linear expansion characteristics as a function of true thermodynamic temperature, and so give similar results.
If you interested in checking other best thermometers be sure to check the Best Instant Read Thermometer and these other articles.