Jade Rabbit brand sphygmomanometer where can test

Mercury sphygmomanometer are the use of Pascal U-tube on both sides of the principle of equal pressure, the structure is simple, the accuracy is higher than the electronic, so now the hospital is still widely used in hospitals to engage in equipment, honestly, to find the measurement of the Bureau of detection of mercury sphygmomanometer basically in order to generate revenue does not have much significance, but this is the national mandatory inspection, do not detect the test also have to be tested! The cost of a test is equal to the cost of half a sphygmomanometer, so generally new ones are not allowed to test them. The so-called inspection did not do anything, just do some routine maintenance some, basically with that instrument to detect are accurate. So long as the mercury has no impurities, the cuff does not leak, the mercury column to maintain the vertical do not tilt more than 2 ° are basically accurate. Cuff leather ball these are more likely to aging leakage, these with a long time is to change. Inside the mercury if you find oxidation, luster did not turn gray, and mercury column to the highest when there is a break in the case this will also affect the accuracy of the replacement of mercury to be careful, mercury is toxic, outside the general is not easy to buy mercury, so it is best to look for a hospital professional change.