What Is a Mercury Thermometer?

Mercury thermometer is a type of expansion thermometer. The freezing point of mercury is -39 ° C, the boiling point is 356.7 ° C, and the measurement temperature range is -39 ° C-357 ° C. It can only be used as a local monitoring instrument. Using it to measure temperature is not only simple and intuitive, but also avoids errors from external remote thermometers.

Mercury thermometer

A mercury thermometer commonly used in the laboratory consists of a glass bulb containing mercury.

Disposal of Mercury Thermometer

Sulfur powder can be chemically converted into mercury sulfide by spraying it on the place where liquid mercury flows. Mercury sulfide will not affect health through inhalation, and liquid mercury will not be volatized into the air in large quantities to cause harm to the human body. Also pay attention to indoor ventilation.

Experts warn that if a child's hand is broken and exposed to mercury, he should be rushed to the hospital for treatment. Also, mercury should fall on the floor. Don't wait for it to evaporate or suck it with a vacuum cleaner. It is best to collect it with an ordinary small shovel.

Experts believe that the danger of mercury thermometers is very large, far beyond people's imagination. For example, people put it in their mouths to measure their body temperature. If the universal thermometer breaks, mercury may flow into the mouth or even be swallowed. In order to drain the mercury as soon as possible, at this time the patient cannot eat at first, and eat more crude fiber vegetables. If the skin is broken by the broken mercury temperature plan, it is likely to cause infection and skin inflammation; If mercury enters human blood, it can cause mercury poisoning.

Correct treatment method: Spilled mercury must be collected immediately with a dropper and a brush, and covered with water (preferably with glycerin), and then sprinkled with sulfur powder in the polluted area. It can be cleaned after no liquid (usually about one week) .

Mercury thermometer and red water thermometer

Mercury has a range of -38.87 to 356.7 degrees Celsius, and red water thermometers are usually kerosene, with a range of about -30 to 150 degrees Celsius.