There are many test methods for anti-rust grease, but in general, they can be divided into two categories:

One type is atmospheric exposure test, including atmospheric exposure, thermometer box and indoor storage tests. The method is simple and can be used for sample screen, parts and even integrated products in indoor, outdoor or thermometer boxes. This is the most reliable method to test the anti-rust performance of various anti-rust oils under natural conditions. Because it best corresponds to actual local atmospheric conditions, which cannot be simulated by laboratory acceleration tests. Therefore, although the test period is too long, it is often used in practice, and sometimes even necessary.

The other is indoor acceleration test, that is, in the laboratory, with a variety of devices to simulate the actual use of conditions, or artificial harsh conditions, such as high temperature, high temperature, salt fog, harmful gas corrosion process acceleration. The advantages of this method are fast time, short cycle, accurate control of corrosion conditions, and good reproducibility of test results. However, due to the complexity of atmospheric corrosion conditions, a specific test method can only emphasize one or several factors, so the test results are quite limited. The results of each test method can only reflect the performance of antirust grease from a certain aspect, so the evaluation of the same antirust grease generally requires several accelerated tests, in order to comprehensively reflect the protective performance of the antirust grease from all angles, so as to ensure the use. Even this does not fully represent actual usage. Since each accelerated test is carried out under specific corrosion conditions, it is difficult to draw a parallel relationship with the results of the first type of test, such as the storage test and the bake-box test, even to obtain the so-called "conversion factor", which has been proved by many practices. For example, in the evaluation of thin coatings, good coatings are often better in dynamic tide screen than in the same time screen tests. The laboratory test method of antirust grease can be roughly divided into direct and indirect methods. The direct method is to put the oiled metal test piece in a specific corrosive medium to accelerate the corrosion, and finally to evaluate the metal surface condition or weight change. Indirect method was used to determine the bending of some physical properties and electrochemical properties before and after the test or the change in the test process.

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