How long should a thermometer measure? How long does it take to measure body temperature?

3 minutes on the oral and anal surfaces, and 5 minutes on the armpits.

Measure for 5-10 minutes. Armpits are more prone to sweating, so be sure to wipe off the sweat under your armpits when measuring. Armpit temperature measurement should be done for a time of 5-6 minutes.

Lubricants should be used to measure rectal temperature, especially if it is being done by another person. While rectal temperature is the most accurate, it can be embarrassing to consider in some countries or cultures. In addition, if the thermometer is inserted incorrectly, it can be uncomfortable and even painful for the patient.

How long does a thermometer last? The thermometer is a medical thermometer, which can accurately measure the highest body temperature of the human body. How long does a thermometer last?

Generally speaking, it takes a few minutes for a thermometer to measure. Among household thermometers, the most common is the mercury thermometer. The mercury thermometer is composed of a capillary tube with a mercury bubble at the bottom, and the mercury in the bubble will rise when heated, and the effect of measuring body temperature can be achieved through the principle of thermal expansion and cold contraction.

It takes a while for mercury to physically act when it is heated, so 7 minutes is best when measuring body temperature with mercury.

Mercury thermometer has the characteristics of accuracy, generally when measuring axillary temperature, it takes 5-10 minutes, and 7 minutes is the best. However, mercury thermometers are gradually being replaced by electronic thermometers and infrared thermometers based on the fact that the working substance is mercury. Mercury is harmful to nature and the earth, and if used incorrectly, it can cause a lot of pollution.

Sweden banned the sale of all medical devices containing mercury in 1992. The United Kingdom, France, Denmark and the Netherlands have also banned the use and sale of goods. Since 2000, several states and cities in the United States, including San Francisco, Boston, and Michigan, have banned the sale of mercury thermometers.

The European Commission has also decided to ban the sale of mercury thermometers from 2005 and their export from 2011.

According to statistics, there are more than 10 tons of mercury in China every year because of the damage of mercury thermometers and disposal as waste. Although it is well known that mercury can cause harm to the human body, there are no relevant regulations on mercury thermometers in China. Mercury thermometers are the most commonly used in major hospitals, and mercury thermometers are also used in pharmacies.

According to experts, because the electronic thermometer used to appear on the market as a health care product and gift, the quality has not been effectively supervised by the relevant state departments, coupled with high costs and low profits, the market has not yet matured. Mercury thermometer belongs to the national compulsory verification measuring instruments, and the history of production and use is long, at present, whether in product quality or supervision and management is basically more standardized.