- (1) A laboratory thermometer is made up of a long glass tube having a thin bore in it.
- (2) There is a glass bulb containing mercury which is joined at the lower end of the glass tube.
- (3) The top end of glass tube is sealed (after removing air)
- (4) The whole length of thermometer glass tube is graduated (or calibrated) in degrees Celsius.
How to use a lab thermometer?
Laboratory thermometers are capable of accurately measuring temperature variations in a variety of mediums, including some caustic to human skin. Because of their construction, and their expense, it is important to know how to properly use a lab thermometer without breaking it. With some simple equipment and important ...
How to use a thermometer to take your temperature?
Oral temperature
- If you've been eating or drinking, wait 30 minutes before you take a temperature by mouth.
- Turn on the digital thermometer. Place the thermometer tip under your tongue.
- Close your 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 a lab thermometer?
The segmental analysis focuses on revenue and forecast by region (country), by Type and by Application in terms of revenue and forecast for the period 2016-2027. For China market, this report focuses on the High Temperature Laboratory Furnace market size by players, by Type, and by Application, for the period 2016-2027.
What is thermometer used for in chemistry?
To reduce the lactose content of dairy raw materials, various industrial and biotechnological methods were used: enzymatic hydrolysis of lactose, baromembranous methods, bioconversion of lactose by lactic bacteria and others.
Which solution is used in laboratory thermometer?
Answer: mercury is used in laboratory thermometer because it is the only metal liquid at room temperature and expands with rise in temperature.Jun 8, 2021
What is the use of laboratory thermometer Class 7?
It is used to measure the temperatures in school or other laboratories for scientific purpose as they measure temperatures to a range higher than clinical thermometers. One such thermometer is known as the laboratory thermometer with a scale generally ranging from –10°C to 110°C.
Is mercury used in laboratory thermometer?
Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.Feb 11, 2007
What liquid is used in laboratory thermometer and why?
Alcohol is used in a laboratory thermometer instead of a clinical thermometer because alcohol has a very low freezing point in comparison to the Mercury. It is used in a cool place or region. The freezing point is the temperature at which a liquid starts changing into solid-state.
What is the thermometer used for?
A thermometer is a tool that measures temperature — how hot or cold something is. Thermometers are used to see if you have a fever or tell you how cold it is outside. Made up of thermo (heat) and meter (measuring device), the meaning of the word thermometer is pretty straightforward.
What is filled in the bulb of thermometer?
Mercury metal is used in the bulb of thermometer. This is because of its high boiling temperature and its high coefficient expansion.
Why alcohol is used in thermometer?
Alcohol thermometers are used rather than mercury thermometers in very cold regions because alcohol has a lower freezing point than mercury. Pure ethanol freezes at -115 degrees C, while mercury freezes at -38 degrees C.Dec 1, 2021
Which liquid is used in a thermometer?
In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.Mar 30, 2021
Why mercury or alcohol is used in thermometer?
There is a technical reason for using mercury in clinical thermometers. Mercury has a greater coefficient of thermal expansion than alcohol. This means a column of mercury will expand and rise more than a column of alcohol for the same temperature change. As a result, you can get finer readings with mercury.Mar 27, 2016
What type of mercury is used in thermometers?
Elemental or metallic mercury is used in mercury thermometers and (in combination with silver and other metals) in dental amalgam. In China, dental amalgam was used to fill teeth over 1000 years ago (cited in Drexler 1998). Inorganic mercury, e.g. mercury chloride, has been used as a disinfectant.
Why mercury is used in sphygmomanometer?
Mercury has a specific gravity of about 13.6, i.e. it is 13.6 times denser as compared to water and thus a comparable water column will require 13.6 times the height (as compared to mercury column). Hence mercury is used as a standard fluid in blood measurement and other pressure measurement devices. Hope this helps.Mar 19, 2016
Why mercury is used in clinical thermometer?
Mercury is the only metal that is in liquid state at room temperature. It is used in thermometers because it has a high coefficient of expansion which makes it easy to move in the thermometers as per the temperatures. Mercury has a boiling point which makes it suitable to measure higher temperatures.
1. What is a thermometer mostly used for?
A thermometer is a useful tool for detecting temperatures of various degrees. The temperature is the degree of measure of the hotness of a body. Cl...
2. What are the similarities between Clinical thermometers and Laboratory Thermometer?
As there are differences, so are similarities between the two thermometers. Clinical thermometers and laboratory thermometers both have a liquid ca...
3. What is a clinical thermometer?
We use a clinical thermometer to measure the temperature of the body. This thermometer can be found in places such as hospitals and care centres. T...
4. What is a laboratory thermometer?
Laboratory thermometers are used for measuring any other objects except bodies. There is a bulb at the bottom of the thermometer. The narrow tube,...
Specifications
Display Options
- This type ofthermometercomprises a lens that focuses the infrared energy (IR) on to a detector. This detector in turn coverts IR into an electric signal that is further displayed in units of temperature. Its application is best suited for taking temperatures from a distance or measuring it from the surface. Also Read: Tips on How to Choose Your Lab...
Features
Applications
Calibration
Standards