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

Features:

1. Length: 300mm 

OPTIONS:

1. Mercury M -10 to 110^oC, 1^oC White Back

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

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

4. Alcohol A -10 to 110^oC, 1^oC Yellow Back

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

6. Alcohol A -10 to 110^oC, 0.5^oC Yellow Back

7. Mercury M -10 to 360^oC, 2^oC Yellow Back

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.