What you need to knock down the mercury, isn't she slide down on their own? No, this is not observed, therefore, need to shake off that the column fell down. When the thermometer is bad strahnet, the temperature will show he is wrong. But this does not mean that the device is bad, just need to learn how to use it.

Mercury thermometers maximum, how to operate

The ambient temperature is lower than body temperature, and the mercury itself should fall down. However, this does not happen because of a particular design. The tube through which the mercury creeping up, on the border with the bulb has curvature and narrowing. This is done to ensure that mercury remained in place, and the result was available to all.

You need to consider that the cost of mercury thermometer is much lower than electronic.

Otherwise, if the column is dropped, the exact temperature could not be seen, because once the column started to fall down. Under this option, the indicators will stray. And return the thermometer to a working state is possible only with sharp and repeated shaking. If on the scale of the mercury is 35 degrees and above, the device must be operational with shaking.

Shake the thermometer needs to learn

Before you shake the thermometer, you need to make sure that he won't be able to touch any objects. Otherwise, the device is broken, have to call the service demercurization, because mercury is a poisonous element, or rather its vapors. If you want to measure the temperature of the child, in any case we cannot afford to shake the thermometer yourself.
Children better thermometer to give, since they often break, and then played with balls of mercury.

To properly bring down the mercury column, you need to stand in front of the sofa face, hold the thermometer in his right hand, sending the mercury flask forward. The thermometer too much should not take, as it is likely to squash it. But mild to take is not recommended, it can pop out of hands. No rings at this time on hand should not be. The hand must be raised, then very sharply cut. To make some such movements, and test the column. If he is not cleared to shake again.

Ready device to put the armpit, hold for at least 10 minutes, otherwise the value will not be accurate. Remove the watch indication. Keep a thermometer is necessary so that the mercury reflected the light. Otherwise will consider anything. After the measurement, the thermometer is removed in the case of the reach of children place.