Contents
- 1 What liquid is in a laboratory thermometer?
- 2 What is the difference between the clinical and laboratory thermometer?
- 3 What is the difference between laboratory and clinical thermometer?
- 4 What are two differences between clinical and laboratory thermometer?
- 5 What are the different types of thermometers used for?
What liquid is in a laboratory thermometer?
mercury
What Are Different Types of Laboratory Thermometers? Thermometers may contain a fluid such as mercury or a gas in a glass or metal tube. In the case of liquid-in-glass thermometers, the liquid expands as the temperature rises, indicating the temperature.
Which liquid is used in laboratory thermometer and why?
Why is only mercury used in clinical thermometer ? A clinical thermometer is used to measure human body temperature. It consists of a long glass tube which is graduated. A thermometric liquid is present within the tube which expands proportionally to temperature,hence measures it.
How do you handle a laboratory thermometer?
Tighten the screw to secure the thermometer. Place the end of the thermometer with the reservoir of liquid in the testing medium. For example, if you are testing the temperature of ice water, place the reservoir in the water, below the ice, but not touching the bottom of the flask or cup the water is held in.
What is the difference between the clinical and laboratory thermometer?
A clinical Thermometer is meant for clinical purposes….Thermometers.
| Clinical Thermometer | Laboratory thermometer |
|---|---|
| Used to measure human body temperature | Used to measure temperature in the laboratory |
| It has kink, which prevents immediate backflow of mercury | It does not have a kink |
Which metal is used in thermometer?
Why is mercury used in thermometers despite being the poorest conductor of heat? Most metals are good conductors of heat and they are solids at room temperature. Mercury is the only one in liquid state at room temperature. It’s used in thermometers because it has high coefficient of expansion.
What is difference between clinical and laboratory thermometer?
Clinical thermometer is used to measure the human body temperature. A laboratory thermometer is not used for this purpose of measuring body temperature; it is generally used for the measurement of objects which generally have a temperature range outside that of a normal human body.
What is the difference between laboratory and clinical thermometer?
Why can’t we use a laboratory thermometer to measure body temperature?
A laboratory thermometer cannot be used to measure the human body temperature. This is because as soon as we take out the bulb of the laboratory thermometer from our mouth, the level of mercury in its tube will start falling quickly. This will give a wrong value of the body temperature.
How does a laboratory thermometer works?
Laboratory thermometers are used to measure temperatures or temperature changes with a high degree of precision. The way a laboratory thermometer works depends upon its type. They are generally a liquid-in-glass device, a bimetallic strip, an electronic thermistor thermometer, or infrared (IR) device.
What are two differences between clinical and laboratory thermometer?
The clinical thermometer is used to measure body temperature, however, laboratory thermometer is not used for the purpose of measuring body temperature. The clinical thermometer is can be tilted while reading the temperature values whereas laboratory thermometer need to be kept upright. …
What is the purpose of a laboratory thermometer?
Laboratory thermometers are used to measure temperatures or temperature changes with a high degree of precision. They are made of metal or glass and strengthened through thermal tempering or annealing. The way a laboratory thermometer works depends upon its type. Also, why alcohol is used in laboratory thermometer?
Can a thermometer be used in a clinical setting?
Laboratory Thermometer Laboratory thermometers cannot be used for clinical purposes because such thermometers read temperatures ranging from -10 oC to 110 oC, which is very high as compared to the human body temperature range.
What are the different types of thermometers used for?
For example, there are one set of thermometers which is used to measure body temperature while another set of thermometers to measure boiling point and freezing point during experiments. Here, we will discuss the two types of thermometers, namely, clinical thermometer and laboratory thermometer. The liquid used should be visible.
What does silver mean on a laboratory thermometer?
The silver color on the laboratory thermometer at the bulb normally indicates the presence of mercury. Mercury expands as the temperature increases, thus raising the reading, while decreasing temperatures contract the mercury, lowering the reading.