The so-called reproducibility of the experiment refers to a test that uses the same conditions and repeats it many times. The results obtained each time should be basically the same. The reproducibility of this experiment is good. If the reproducibility of an experiment is not good, the reliability of the results of this experiment will be reduced. Comparability refers to the possibility of comparing data from one trial with another similar trial . Two experiments are comparable when the conditions of the two experiments are exactly the same or basically the same , otherwise they are not comparable. Comparability also refers to the fact that a test conforms to the standard test method. When everyone conducts a certain test such as the neutral salt spray test, the test periods are comparable. At this time, there is no need to specify the test method and conditions used: just say how many hours the neutral salt spray test of a certain product is, and it can be compared with the passing time of other products. However, if a certain enterprise standard or local standard is adopted , it is necessary to specify the method and test conditions used, and only the results of tests carried out according to the same conditions and methods can be compared.
