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Thermometer Mercury / Spirit (Red Alcohol) for Laboratory / Clinical

RM 7.00

Features:

1. Length: 300mm 


OPTIONS:

1. Mercury M -10 to 110oC, 1oC:

2. Mercury Superior MS -10 to 110oC, 1oC

3. Mercury Superior MS -10 to 110oC, 0.5oC

4. Alcohol A -10 to 110oC, 1oC

5. Alcohol Superior AS -10 to 110oC, 1oC

6. Alcohol A -10 to 110oC, 0.5oC

7. Mercury M -10 to 360oC, 2oC


Advantages and Disadvantages of Mercury Thermometers

Advantages

  • It is a good conductor of heat and hence, can measure even high temperatures.
  • It gives results quickly – has a fast response time.
  • It expands linearly and less than alcohol and any other liquid.
  • It is more durable than an alcohol thermometer because mercury does not evaporate easily.
  • It is smaller in size compared to alcohol one.
  • Mercury does not wet the wall of the thermometer, which means that results can be highly accurate.

Disadvantages

  • It is highly toxic for living beings and the environment if the bulb breaks and mercury leaks out.
  • Mercury is difficult to clean, and it can contaminate the surface on which it leaked.
  • It cannot measure cold temperatures.
  • It has low thermal co-efficient.


Advantages and Disadvantages of Alcohol Thermometers

Advantages

  • It is suitable to measure low temperatures because of its freezing point is low.
  • It is less toxic than mercury thermometer and hence high on safety factor for human and environment.
  • It has a greater value of temperature coefficient of expansion than a mercury thermometer.
  • It is less expensive than a mercury thermometer.

Disadvantages

  • It is less durable because alcohol evaporates faster than mercury.
  • It cannot measure high temperature because of a low boiling point.
  • It wets the walls of the thermometer, which can adversely impact the accuracy of readings.