The cause of mercury spillage is that the sphygmomanometer forgets to turn off the switch on the mercury storage bottle after the sphygmomanometer is used; the mercury does not flow into the mercury storage bottle due to the improper placement and position, and the sphygmomanometer mercury overflows from the air filter on the upper end of the graduated glass tube; Improper use, excessive force when pressurizing, make mercury rush out or overflow from the graduated glass tube. For the above reasons, the following solutions can be adopted: After each use, make sure that the mercury completely flows into the mercury storage bottle, and turn off the switch on the mercury storage bottle; pressurize slowly and evenly during use, especially when the mercury column rises. When you reach the port of the glass tube, you should be more careful and careful; if you find that the amount of mercury is reduced, you should add it in time to ensure the normal use of the sphygmomanometer.
Common causes of zero misalignment include excessive or insufficient mercury; poor air permeability of the upper end of the mercury storage bottle; dirt on the inner wall of the mercury storage bottle; impure mercury and impurities. For the above reasons, adjust the amount of mercury to zero; insert a slender needle through the upper hole of the mercury storage bottle and pierce a small hole to ensure that the upper hole is unobstructed; clean or replace the mercury storage bottle; clean and filter the mercury.
